{"id":10802,"date":"2025-08-04T10:46:26","date_gmt":"2025-08-04T03:46:26","guid":{"rendered":"https:\/\/www.careerlink.vn\/cam-nang-viec-lam\/?p=10802"},"modified":"2026-03-27T17:20:16","modified_gmt":"2026-03-27T10:20:16","slug":"rgb-la-gi","status":"publish","type":"post","link":"https:\/\/www.careerlink.vn\/cam-nang-viec-lam\/tu-van-nghe-nghiep\/rgb-la-gi","title":{"rendered":"RGB l\u00e0 g\u00ec? C\u00e1ch ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng trong thi\u1ebft k\u1ebf s\u1ed1"},"content":{"rendered":"\n

D\u00f9 b\u1ea1n l\u00e0 m\u1ed9t nh\u00e0 thi\u1ebft k\u1ebf, l\u1eadp tr\u00ecnh vi\u00ean hay \u0111\u01a1n gi\u1ea3n l\u00e0 ng\u01b0\u1eddi d\u00f9ng thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed, ch\u1eafc h\u1eb3n b\u1ea1n t\u1eebng b\u1eaft g\u1eb7p h\u1ec7 m\u00e0u quen thu\u1ed9c n\u00e0y tr\u00ean m\u00e0n h\u00ecnh. RGB l\u00e0 g\u00ec<\/strong> v\u00e0 v\u00ec sao n\u00f3 l\u1ea1i tr\u1edf th\u00e0nh n\u1ec1n t\u1ea3ng cho m\u1ecdi h\u00ecnh \u1ea3nh k\u1ef9 thu\u1eadt s\u1ed1 m\u00e0 ch\u00fang ta nh\u00ecn th\u1ea5y h\u1eb1ng ng\u00e0y? C\u00f9ng kh\u00e1m ph\u00e1 chi ti\u1ebft \u0111\u1ec3 hi\u1ec3u r\u00f5 vai tr\u00f2, c\u00e1ch ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a h\u1ec7 m\u00e0u n\u00e0y trong b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y.<\/p>\n\n\n\n

\"RGB<\/figure>\n\n\n\n

RGB l\u00e0 g\u00ec<\/h2>\n\n\n\n

RGB l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a ba m\u00e0u c\u01a1 b\u1ea3n trong m\u00f4 h\u00ecnh \u00e1nh s\u00e1ng: Red (\u0111\u1ecf), Green (xanh l\u00e1) v\u00e0 Blue (xanh d\u01b0\u01a1ng). \u0110\u00e2y l\u00e0 h\u1ec7 m\u00e0u c\u1ed9ng (Additive Color Model), t\u1ee9c l\u00e0 khi k\u1ebft h\u1ee3p c\u00e1c \u00e1nh s\u00e1ng m\u00e0u n\u00e0y v\u1edbi c\u01b0\u1eddng \u0111\u1ed9 kh\u00e1c nhau, ch\u00fang s\u1ebd t\u1ea1o ra h\u00e0ng tri\u1ec7u m\u00e0u s\u1eafc \u0111a d\u1ea1ng m\u00e0 m\u1eaft ng\u01b0\u1eddi c\u00f3 th\u1ec3 c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n

\n

M\u1ed7i \u0111i\u1ec3m \u1ea3nh tr\u00ean m\u00e0n h\u00ecnh \u0111\u1ec1u l\u00e0 s\u1ef1 ph\u1ed1i h\u1ee3p c\u1ee7a ba m\u00e0u RGB.<\/strong><\/strong><\/p>\n<\/blockquote>\n\n\n\n

Khi ba m\u00e0u RGB \u0111\u01b0\u1ee3c pha v\u1edbi t\u1ef7 l\u1ec7 t\u1ed1i \u0111a, ch\u00fang t\u1ea1o ra \u00e1nh s\u00e1ng tr\u1eafng; ng\u01b0\u1ee3c l\u1ea1i, n\u1ebfu kh\u00f4ng c\u00f3 \u00e1nh s\u00e1ng n\u00e0o, k\u1ebft qu\u1ea3 s\u1ebd l\u00e0 m\u00e0u \u0111en.<\/p>\n\n\n\n

H\u1ec7 m\u00e0u RGB \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn trong c\u00e1c thi\u1ebft b\u1ecb hi\u1ec3n th\u1ecb nh\u01b0 m\u00e0n h\u00ecnh m\u00e1y t\u00ednh, \u0111i\u1ec7n tho\u1ea1i, TV, m\u00e1y \u1ea3nh k\u1ef9 thu\u1eadt s\u1ed1 v\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng chi\u1ebfu s\u00e1ng LED. \u0110\u00e2y c\u0169ng l\u00e0 chu\u1ea9n m\u00e0u m\u1eb7c \u0111\u1ecbnh trong l\u1eadp tr\u00ecnh giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng, thi\u1ebft k\u1ebf web v\u00e0 c\u00e1c ph\u1ea7n m\u1ec1m x\u1eed l\u00fd \u1ea3nh k\u1ef9 thu\u1eadt s\u1ed1 nh\u01b0 Photoshop, Illustrator.<\/p>\n\n\n\n

S\u1ef1 ph\u1ed5 bi\u1ebfn c\u1ee7a RGB b\u1eaft ngu\u1ed3n t\u1eeb vi\u1ec7c m\u00f4 h\u00ecnh n\u00e0y ph\u00f9 h\u1ee3p v\u1edbi c\u00e1ch m\u1eaft ng\u01b0\u1eddi ti\u1ebfp nh\u1eadn \u00e1nh s\u00e1ng, \u0111\u1ed3ng th\u1eddi t\u01b0\u01a1ng th\u00edch v\u1edbi h\u1ea7u h\u1ebft c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed hi\u1ec7n nay. Hi\u1ec3u r\u00f5 RGB l\u00e0 g\u00ec<\/strong> l\u00e0 b\u01b0\u1edbc n\u1ec1n t\u1ea3ng \u0111\u1ec3 \u1ee9ng d\u1ee5ng hi\u1ec7u qu\u1ea3 trong thi\u1ebft k\u1ebf, c\u00f4ng ngh\u1ec7 v\u00e0 truy\u1ec1n th\u00f4ng s\u1ed1.<\/p>\n\n\n\n

Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 m\u00e0u RGB<\/h2>\n\n\n\n

H\u1ec7 m\u00e0u RGB ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nguy\u00ean l\u00fd \u00e1nh s\u00e1ng c\u1ed9ng (additive color model). Theo nguy\u00ean l\u00fd n\u00e0y, m\u1ed7i m\u00e0u trong b\u1ed9 ba Red \u2013 Green \u2013 Blue \u0111\u01b0\u1ee3c ph\u00e1t s\u00e1ng v\u1edbi c\u01b0\u1eddng \u0111\u1ed9 t\u1eeb 0 \u0111\u1ebfn 255. Khi ba \u00e1nh s\u00e1ng n\u00e0y ch\u1ed3ng l\u00ean nhau \u1edf c\u00e1c m\u1ee9c \u0111\u1ed9 kh\u00e1c nhau, ch\u00fang s\u1ebd t\u1ea1o ra c\u00e1c m\u00e0u s\u1eafc m\u1edbi. N\u1ebfu c\u1ea3 ba \u0111\u1ec1u \u1edf m\u1ee9c 0, k\u1ebft qu\u1ea3 l\u00e0 m\u00e0u \u0111en; n\u1ebfu \u0111\u1ec1u \u1edf m\u1ee9c 255, k\u1ebft qu\u1ea3 l\u00e0 m\u00e0u tr\u1eafng. S\u1ef1 thay \u0111\u1ed5i nh\u1ecf trong t\u1eebng k\u00eanh m\u00e0u s\u1ebd t\u1ea1o n\u00ean s\u1ef1 kh\u00e1c bi\u1ec7t r\u00f5 r\u1ec7t v\u1ec1 s\u1eafc th\u00e1i.<\/p>\n\n\n\n

V\u1edbi \u0111\u1ed9 s\u00e2u m\u00e0u (bit depth) 8-bit cho m\u1ed7i k\u00eanh, h\u1ec7 m\u00e0u RGB c\u00f3 th\u1ec3 hi\u1ec3n th\u1ecb 256 c\u1ea5p \u0111\u1ed9 cho m\u1ed7i m\u00e0u, t\u1ea1o th\u00e0nh h\u01a1n 16,7 tri\u1ec7u m\u00e0u kh\u00e1c nhau (256 \u00d7 256 \u00d7 256). \u0110\u00e2y l\u00e0 l\u00fd do RGB \u0111\u01b0\u1ee3c xem l\u00e0 ti\u00eau chu\u1ea9n cho hi\u1ec3n th\u1ecb h\u00ecnh \u1ea3nh k\u1ef9 thu\u1eadt s\u1ed1, t\u1eeb \u1ea3nh t\u0129nh \u0111\u1ebfn video v\u00e0 \u0111\u1ed3 h\u1ecda.<\/p>\n\n\n\n

\u01afu \u0111i\u1ec3m<\/strong> c\u1ee7a h\u1ec7 m\u00e0u RGB l\u00e0 kh\u1ea3 n\u0103ng t\u00e1i hi\u1ec7n m\u00e0u s\u1eafc phong ph\u00fa, d\u1ec5 d\u00e0ng \u0111i\u1ec1u ch\u1ec9nh, ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c thi\u1ebft b\u1ecb ph\u00e1t s\u00e1ng nh\u01b0 m\u00e0n h\u00ecnh, \u0111\u00e8n LED. N\u00f3 cho ph\u00e9p hi\u1ec3n th\u1ecb h\u00ecnh \u1ea3nh r\u1ef1c r\u1ee1, trung th\u1ef1c v\u00e0 r\u00f5 n\u00e9t.<\/p>\n\n\n\n

Tuy nhi\u00ean, nh\u01b0\u1ee3c \u0111i\u1ec3m<\/strong> c\u1ee7a RGB l\u00e0 ph\u1ee5 thu\u1ed9c v\u00e0o thi\u1ebft b\u1ecb \u0111\u1ea7u ra. M\u1ed7i lo\u1ea1i m\u00e0n h\u00ecnh s\u1ebd t\u00e1i t\u1ea1o m\u00e0u RGB kh\u00e1c nhau n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c hi\u1ec7u ch\u1ec9nh m\u00e0u (color calibration). Ngo\u00e0i ra, RGB kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi m\u00f4i tr\u01b0\u1eddng in \u1ea5n v\u1eadt l\u00fd \u2013 n\u01a1i s\u1eed d\u1ee5ng h\u1ec7 m\u00e0u CMYK.<\/p>\n\n\n\n

C\u00e1c lo\u1ea1i kh\u00f4ng gian m\u00e0u RGB<\/h2>\n\n\n\n

M\u1eb7c d\u00f9 RGB l\u00e0 m\u00f4 h\u00ecnh m\u00e0u ph\u1ed5 bi\u1ebfn, nh\u01b0ng kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 h\u1ec7 RGB \u0111\u1ec1u gi\u1ed1ng nhau. T\u00f9y v\u00e0o m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng, ng\u01b0\u1eddi ta \u0111\u00e3 thi\u1ebft l\u1eadp nhi\u1ec1u kh\u00f4ng gian m\u00e0u RGB<\/strong> kh\u00e1c nhau, m\u1ed7i kh\u00f4ng gian m\u00e0u \u0111\u1ecbnh ngh\u0129a ph\u1ea1m vi m\u00e0u (gamut), \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 c\u00e1ch hi\u1ec3n th\u1ecb ri\u00eang bi\u1ec7t. Ba kh\u00f4ng gian RGB \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t hi\u1ec7n nay l\u00e0 sRGB<\/strong>, Adobe RGB<\/strong> v\u00e0 ProPhoto RGB<\/strong>.<\/p>\n\n\n\n

sRGB (Standard RGB)<\/strong> l\u00e0 kh\u00f4ng gian m\u00e0u ti\u00eau chu\u1ea9n do HP v\u00e0 Microsoft ph\u00e1t tri\u1ec3n, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn trong web, tr\u00ecnh duy\u1ec7t v\u00e0 ph\u1ea7n l\u1edbn thi\u1ebft b\u1ecb hi\u1ec3n th\u1ecb. N\u00f3 c\u00f3 d\u1ea3i m\u00e0u h\u1eb9p nh\u01b0ng \u0111\u1ed9 t\u01b0\u01a1ng th\u00edch cao, \u0111\u1ea3m b\u1ea3o m\u00e0u s\u1eafc nh\u1ea5t qu\u00e1n gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb.<\/p>\n\n\n\n

Adobe RGB<\/strong> c\u00f3 d\u1ea3i m\u00e0u r\u1ed9ng h\u01a1n sRGB, \u0111\u1eb7c bi\u1ec7t \u1edf v\u00f9ng xanh l\u00e1, n\u00ean th\u00edch h\u1ee3p cho c\u00e1c c\u00f4ng vi\u1ec7c thi\u1ebft k\u1ebf in \u1ea5n chuy\u00ean nghi\u1ec7p. Tuy nhi\u00ean, \u0111\u1ec3 t\u1eadn d\u1ee5ng \u0111\u00fang Adobe RGB, c\u1ea7n thi\u1ebft b\u1ecb hi\u1ec3n th\u1ecb v\u00e0 ph\u1ea7n m\u1ec1m h\u1ed7 tr\u1ee3 \u0111\u1ea7y \u0111\u1ee7.<\/p>\n\n\n\n

ProPhoto RGB<\/strong> c\u00f3 d\u1ea3i m\u00e0u c\u1ef1c r\u1ed9ng, v\u01b0\u1ee3t xa kh\u1ea3 n\u0103ng c\u1ea3m nh\u1eadn c\u1ee7a m\u1eaft ng\u01b0\u1eddi. N\u00f3 ph\u00f9 h\u1ee3p v\u1edbi x\u1eed l\u00fd h\u00ecnh \u1ea3nh RAW, nh\u01b0ng n\u1ebfu kh\u00f4ng ki\u1ec3m so\u00e1t k\u1ef9, d\u1ec5 g\u00e2y sai l\u1ec7ch m\u00e0u khi xu\u1ea5t file.<\/p>\n\n\n\n

Vi\u1ec7c ch\u1ecdn kh\u00f4ng gian m\u00e0u ph\u00f9 h\u1ee3p s\u1ebd \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng hi\u1ec3n th\u1ecb, in \u1ea5n v\u00e0 hi\u1ec7u qu\u1ea3 truy\u1ec1n t\u1ea3i h\u00ecnh \u1ea3nh mong mu\u1ed1n.<\/p>\n\n\n\n

\u1ee8ng d\u1ee5ng h\u1ec7 m\u00e0u RGB trong th\u1ef1c t\u1ebf<\/h2>\n\n\n\n

H\u1ec7 m\u00e0u RGB \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong h\u1ea7u h\u1ebft c\u00e1c l\u0129nh v\u1ef1c li\u00ean quan \u0111\u1ebfn hi\u1ec3n th\u1ecb h\u00ecnh \u1ea3nh v\u00e0 \u00e1nh s\u00e1ng k\u1ef9 thu\u1eadt s\u1ed1. Trong thi\u1ebft k\u1ebf \u0111\u1ed3 h\u1ecda, RGB l\u00e0 h\u1ec7 m\u00e0u m\u1eb7c \u0111\u1ecbnh c\u1ee7a c\u00e1c ph\u1ea7n m\u1ec1m nh\u01b0 Photoshop, Illustrator hay Figma, gi\u00fap nh\u00e0 thi\u1ebft k\u1ebf d\u1ec5 d\u00e0ng t\u1ea1o ra h\u00ecnh \u1ea3nh r\u1ef1c r\u1ee1 v\u00e0 ch\u00ednh x\u00e1c v\u1edbi m\u00e0n h\u00ecnh hi\u1ec3n th\u1ecb.<\/p>\n\n\n\n

Trong l\u0129nh v\u1ef1c nhi\u1ebfp \u1ea3nh v\u00e0 video, RGB l\u00e0 n\u1ec1n t\u1ea3ng \u0111\u1ec3 x\u1eed l\u00fd h\u00ecnh \u1ea3nh s\u1ed1. C\u00e1c m\u00e1y \u1ea3nh k\u1ef9 thu\u1eadt s\u1ed1, m\u00e1y quay phim v\u00e0 ph\u1ea7n m\u1ec1m h\u1eadu k\u1ef3 \u0111\u1ec1u ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean h\u1ec7 m\u00e0u n\u00e0y. RGB c\u0169ng l\u00e0 ti\u00eau chu\u1ea9n trong c\u00e1c m\u00e0n h\u00ecnh m\u00e1y t\u00ednh, \u0111i\u1ec7n tho\u1ea1i, TV, m\u00e1y chi\u1ebfu v\u00e0 c\u00e1c thi\u1ebft b\u1ecb LED, n\u01a1i \u00e1nh s\u00e1ng \u0111\u01b0\u1ee3c ph\u00e1t ra tr\u1ef1c ti\u1ebfp \u0111\u1ec3 t\u1ea1o m\u00e0u.<\/p>\n\n\n\n

Ngo\u00e0i ra, RGB c\u00f2n hi\u1ec7n di\u1ec7n trong c\u00f4ng ngh\u1ec7 \u0111\u00e8n LED trang tr\u00ed, h\u1ec7 th\u1ed1ng \u00e1nh s\u00e1ng s\u00e2n kh\u1ea5u v\u00e0 thi\u1ebft b\u1ecb chi\u1ebfu s\u00e1ng th\u00f4ng minh, n\u01a1i ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh m\u00e0u s\u1eafc t\u00f9y \u00fd d\u1ef1a tr\u00ean s\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a ba k\u00eanh \u0111\u1ecf, l\u1ee5c, lam.<\/p>\n\n\n\n

Nh\u1edd kh\u1ea3 n\u0103ng th\u1ec3 hi\u1ec7n m\u00e0u s\u1eafc linh ho\u1ea1t, RGB \u0111\u00f3ng vai tr\u00f2 c\u1ed1t l\u00f5i trong tr\u1ea3i nghi\u1ec7m th\u1ecb gi\u00e1c s\u1ed1 v\u00e0 l\u00e0 c\u00f4ng c\u1ee5 kh\u00f4ng th\u1ec3 thi\u1ebfu trong truy\u1ec1n th\u00f4ng hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n

Ph\u00e2n bi\u1ec7t RGB v\u00e0 CMYK<\/h2>\n\n\n\n

RGB v\u00e0 CMYK l\u00e0 hai h\u1ec7 m\u00e0u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nh\u1eefng ng\u1eef c\u1ea3nh ho\u00e0n to\u00e0n kh\u00e1c nhau. RGB l\u00e0 h\u1ec7 m\u00e0u d\u1ef1a tr\u00ean \u00e1nh s\u00e1ng v\u00e0 th\u01b0\u1eddng d\u00f9ng trong c\u00e1c thi\u1ebft b\u1ecb hi\u1ec3n th\u1ecb, trong khi CMYK l\u00e0 h\u1ec7 m\u00e0u d\u1ef1a tr\u00ean m\u1ef1c in v\u00e0 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng ch\u1ee7 y\u1ebfu trong in \u1ea5n.<\/p>\n\n\n\n

Ti\u00eau ch\u00ed<\/strong><\/td>RGB<\/strong><\/td>CMYK<\/strong><\/td><\/tr><\/thead>
T\u00ean \u0111\u1ea7y \u0111\u1ee7<\/td>Red \u2013 Green \u2013 Blue<\/td>Cyan \u2013 Magenta \u2013 Yellow \u2013 Key (Black)<\/td><\/tr>
M\u00f4 h\u00ecnh m\u00e0u<\/td>C\u1ed9ng m\u00e0u (Additive)<\/td>Tr\u1eeb m\u00e0u (Subtractive)<\/td><\/tr>
Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng<\/td>C\u00e0ng c\u1ed9ng nhi\u1ec1u \u00e1nh s\u00e1ng \u2192 c\u00e0ng s\u00e1ng \u2192 tr\u1eafng<\/td>C\u00e0ng c\u1ed9ng nhi\u1ec1u m\u1ef1c \u2192 c\u00e0ng t\u1ed1i \u2192 \u0111en<\/td><\/tr>
M\u00f4i tr\u01b0\u1eddng s\u1eed d\u1ee5ng ch\u00ednh<\/td>M\u00e0n h\u00ecnh, thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed, \u00e1nh s\u00e1ng<\/td>M\u00e1y in, in offset, in k\u1ef9 thu\u1eadt s\u1ed1<\/td><\/tr>
Kh\u1ea3 n\u0103ng t\u00e1i t\u1ea1o m\u00e0u<\/td>M\u00e0u s\u1eafc r\u1ef1c r\u1ee1, s\u00e1ng r\u00f5<\/td>M\u00e0u s\u1eafc d\u1ecbu h\u01a1n, ph\u1ee5 thu\u1ed9c ch\u1ea5t li\u1ec7u in<\/td><\/tr>
K\u1ebft qu\u1ea3 t\u1ed1i \u0111a<\/td>M\u00e0u tr\u1eafng<\/td>M\u00e0u \u0111en<\/td><\/tr>
\u0110\u1ed9 ph\u1ed5 bi\u1ebfn<\/td>Thi\u1ebft k\u1ebf k\u1ef9 thu\u1eadt s\u1ed1, web, giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng<\/td>In \u1ea5n qu\u1ea3ng c\u00e1o, s\u00e1ch, bao b\u00ec, \u1ea5n ph\u1ea9m gi\u1ea5y<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u00fang h\u1ec7 m\u00e0u ngay t\u1eeb \u0111\u1ea7u trong thi\u1ebft k\u1ebf s\u1ebd gi\u00fap gi\u1ea3m thi\u1ec3u sai l\u1ec7ch m\u00e0u s\u1eafc khi hi\u1ec3n th\u1ecb ho\u1eb7c in \u1ea5n, \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n m\u00e0u gi\u1eefa c\u00e1c n\u1ec1n t\u1ea3ng.<\/p>\n\n\n\n

C\u00e1ch s\u1eed d\u1ee5ng m\u00e3 m\u00e0u RGB trong thi\u1ebft k\u1ebf<\/h2>\n\n\n\n

Trong thi\u1ebft k\u1ebf k\u1ef9 thu\u1eadt s\u1ed1, m\u00e3 m\u00e0u RGB l\u00e0 c\u00f4ng c\u1ee5 c\u01a1 b\u1ea3n \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c m\u00e0u s\u1eafc hi\u1ec3n th\u1ecb. C\u00f3 hai c\u00e1ch bi\u1ec3u di\u1ec5n ph\u1ed5 bi\u1ebfn c\u1ee7a m\u00e3 RGB: d\u1ea1ng s\u1ed1 th\u1eadp ph\u00e2n v\u00e0 d\u1ea1ng m\u00e3 Hex.<\/p>\n\n\n\n

\u1ede d\u1ea1ng th\u1eadp ph\u00e2n, m\u1ed7i k\u00eanh m\u00e0u \u0111\u1ecf, xanh l\u00e1 v\u00e0 xanh d\u01b0\u01a1ng \u0111\u01b0\u1ee3c g\u00e1n gi\u00e1 tr\u1ecb t\u1eeb 0 \u0111\u1ebfn 255. V\u00ed d\u1ee5, m\u00e3 RGB(255, 0, 0) t\u01b0\u01a1ng \u1ee9ng v\u1edbi m\u00e0u \u0111\u1ecf t\u01b0\u01a1i, trong khi RGB(0, 0, 0) l\u00e0 m\u00e0u \u0111en tuy\u1ec7t \u0111\u1ed1i. D\u1ea1ng m\u00e3 n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ph\u1ea7n m\u1ec1m thi\u1ebft k\u1ebf nh\u01b0 Adobe Photoshop ho\u1eb7c khi l\u1eadp tr\u00ecnh giao di\u1ec7n.<\/p>\n\n\n\n

D\u1ea1ng m\u00e3 Hex \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng s\u00e1u k\u00fd t\u1ef1 h\u1ec7 th\u1eadp l\u1ee5c ph\u00e2n, th\u01b0\u1eddng d\u00f9ng trong HTML v\u00e0 CSS. M\u00e3 m\u00e0u \u0111\u1ecf n\u00f3i tr\u00ean s\u1ebd \u0111\u01b0\u1ee3c vi\u1ebft l\u00e0 #FF0000, c\u00f2n m\u00e0u tr\u1eafng l\u00e0 #FFFFFF. C\u00e1ch vi\u1ebft n\u00e0y gi\u00fap r\u00fat g\u1ecdn c\u00fa ph\u00e1p v\u00e0 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t trang web.<\/p>\n\n\n\n

Vi\u1ec7c s\u1eed d\u1ee5ng m\u00e3 RGB \u0111\u00fang c\u00e1ch gi\u00fap \u0111\u1ea3m b\u1ea3o t\u00ednh \u0111\u1ed3ng nh\u1ea5t v\u1ec1 m\u00e0u s\u1eafc gi\u1eefa c\u00e1c n\u1ec1n t\u1ea3ng, \u0111\u1ed3ng th\u1eddi cho ph\u00e9p nh\u00e0 thi\u1ebft k\u1ebf ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd m\u00e0u s\u1eafc trong qu\u00e1 tr\u00ecnh s\u00e1ng t\u1ea1o v\u00e0 ph\u00e1t tri\u1ec3n giao di\u1ec7n.<\/p>\n\n\n\n

C\u00e1c thu\u1eadt ng\u1eef k\u1ef9 thu\u1eadt li\u00ean quan \u0111\u1ebfn RGB<\/h2>\n\n\n\n

\u0110\u1ec3 hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 h\u1ec7 m\u00e0u RGB v\u00e0 c\u00e1ch n\u00f3 ho\u1ea1t \u0111\u1ed9ng trong m\u00f4i tr\u01b0\u1eddng k\u1ef9 thu\u1eadt s\u1ed1, c\u1ea7n n\u1eafm v\u1eefng m\u1ed9t s\u1ed1 thu\u1eadt ng\u1eef chuy\u00ean ng\u00e0nh th\u01b0\u1eddng g\u1eb7p trong thi\u1ebft k\u1ebf v\u00e0 x\u1eed l\u00fd h\u00ecnh \u1ea3nh.<\/p>\n\n\n\n

Bit depth \u0111\u1ec1 c\u1eadp \u0111\u1ebfn s\u1ed1 l\u01b0\u1ee3ng m\u00e0u c\u00f3 th\u1ec3 hi\u1ec3n th\u1ecb. V\u1edbi 8 bit cho m\u1ed7i k\u00eanh RGB, m\u1ed9t h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 hi\u1ec3n th\u1ecb h\u01a1n 16,7 tri\u1ec7u m\u00e0u. N\u1ebfu t\u0103ng bit depth l\u00ean 10 bit ho\u1eb7c 12 bit, d\u1ea3i m\u00e0u \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng v\u00e0 \u0111\u1ed9 chuy\u1ec3n m\u00e0u m\u01b0\u1ee3t m\u00e0 h\u01a1n, th\u01b0\u1eddng \u00e1p d\u1ee5ng trong video HDR ho\u1eb7c \u1ea3nh RAW.<\/p>\n\n\n\n

Gamma correction l\u00e0 qu\u00e1 tr\u00ecnh \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 s\u00e1ng c\u1ee7a h\u00ecnh \u1ea3nh \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1ch m\u1eaft ng\u01b0\u1eddi c\u1ea3m nh\u1eadn. H\u1ea7u h\u1ebft h\u00ecnh \u1ea3nh RGB \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a gamma \u0111\u1ec3 h\u00ecnh \u1ea3nh hi\u1ec3n th\u1ecb t\u1ef1 nhi\u00ean h\u01a1n tr\u00ean m\u00e0n h\u00ecnh.<\/p>\n\n\n\n

Linear RGB l\u00e0 d\u1ea1ng m\u00e0u ch\u01b0a \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng gamma, th\u01b0\u1eddng d\u00f9ng trong x\u1eed l\u00fd \u0111\u1ed3 h\u1ecda n\u1ed9i b\u1ed9. Ng\u01b0\u1ee3c l\u1ea1i, non-linear RGB \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ec9nh gamma \u0111\u1ec3 ph\u1ee5c v\u1ee5 m\u1ee5c \u0111\u00edch hi\u1ec3n th\u1ecb.<\/p>\n\n\n\n

Gamut l\u00e0 ph\u1ea1m vi m\u00e0u m\u00e0 m\u1ed9t h\u1ec7 m\u00e0u c\u00f3 th\u1ec3 t\u00e1i hi\u1ec7n. M\u1ed7i kh\u00f4ng gian RGB nh\u01b0 sRGB hay Adobe RGB c\u00f3 gamut ri\u00eang. Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c thu\u1eadt ng\u1eef n\u00e0y gi\u00fap t\u1ed1i \u01b0u quy tr\u00ecnh l\u00e0m vi\u1ec7c v\u1edbi h\u00ecnh \u1ea3nh v\u00e0 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c m\u00e0u s\u1eafc.<\/p>\n\n\n\n

C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 RGB<\/h2>\n\n\n\n

RGB c\u00f3 d\u00f9ng cho m\u00e0n h\u00ecnh HDR kh\u00f4ng?<\/em><\/strong>
C\u00f3. RGB l\u00e0 c\u01a1 s\u1edf hi\u1ec3n th\u1ecb h\u00ecnh \u1ea3nh HDR, nh\u01b0ng \u0111\u1ec3 \u0111\u1ea1t hi\u1ec7u qu\u1ea3 cao c\u1ea7n m\u00e0n h\u00ecnh h\u1ed7 tr\u1ee3 d\u1ea3i m\u00e0u r\u1ed9ng v\u00e0 \u0111\u1ed9 s\u00e2u m\u00e0u t\u1eeb 10 bit tr\u1edf l\u00ean.<\/p>\n\n\n\n

RGB c\u00f3 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong chi\u1ebfu s\u00e1ng th\u00f4ng minh?<\/em><\/strong>
C\u00f3. RGB LED \u0111\u01b0\u1ee3c d\u00f9ng ph\u1ed5 bi\u1ebfn trong \u0111\u00e8n th\u00f4ng minh, cho ph\u00e9p t\u1ea1o nhi\u1ec1u m\u00e0u kh\u00e1c nhau b\u1eb1ng c\u00e1ch \u0111i\u1ec1u ch\u1ec9nh ba k\u00eanh s\u00e1ng \u0111\u1ecf, xanh l\u00e1 v\u00e0 xanh d\u01b0\u01a1ng.<\/p>\n\n\n\n

M\u00e3 m\u00e0u RGB c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 t\u1ea3i web kh\u00f4ng?<\/em><\/strong>
Kh\u00f4ng \u0111\u00e1ng k\u1ec3. M\u00e3 m\u00e0u RGB r\u1ea5t nh\u1eb9, nh\u01b0ng n\u00ean t\u1ed1i \u01b0u CSS v\u00e0 tr\u00e1nh l\u1ea1m d\u1ee5ng hi\u1ec7u \u1ee9ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t trang.<\/p>\n\n\n\n

M\u00e0u s\u1eafc k\u1ef9 thu\u1eadt s\u1ed1 kh\u00f4ng ng\u1eabu nhi\u00ean tr\u1edf n\u00ean s\u1ed1ng \u0111\u1ed9ng v\u00e0 ch\u00ednh x\u00e1c \u0111\u1ebfn v\u1eady. RGB l\u00e0 g\u00ec<\/strong> kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n m\u00e0 c\u00f2n l\u00e0 n\u1ec1n t\u1ea3ng t\u1ea1o n\u00ean to\u00e0n b\u1ed9 th\u1ebf gi\u1edbi h\u00ecnh \u1ea3nh tr\u00ean m\u00e0n h\u00ecnh. Khi n\u1eafm v\u1eefng nguy\u00ean l\u00fd v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a h\u1ec7 m\u00e0u n\u00e0y, b\u1ea1n s\u1ebd c\u00f3 th\u00eam c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd \u0111\u1ec3 s\u00e1ng t\u1ea1o, hi\u1ec3n th\u1ecb v\u00e0 truy\u1ec1n t\u1ea3i c\u1ea3m x\u00fac m\u1ed9t c\u00e1ch chuy\u00ean nghi\u1ec7p.<\/p>\n\n\n\n

Tr\u00ed Nh\u00e2n<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

D\u00f9 b\u1ea1n l\u00e0 m\u1ed9t nh\u00e0 thi\u1ebft k\u1ebf, l\u1eadp tr\u00ecnh vi\u00ean hay \u0111\u01a1n gi\u1ea3n l\u00e0 ng\u01b0\u1eddi d\u00f9ng thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed, ch\u1eafc h\u1eb3n b\u1ea1n t\u1eebng b\u1eaft …<\/p>\n","protected":false},"author":59,"featured_media":10803,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[],"class_list":["post-10802","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tu-van-nghe-nghiep"],"_links":{"self":[{"href":"https:\/\/www.careerlink.vn\/cam-nang-viec-lam\/wp-json\/wp\/v2\/posts\/10802","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.careerlink.vn\/cam-nang-viec-lam\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.careerlink.vn\/cam-nang-viec-lam\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.careerlink.vn\/cam-nang-viec-lam\/wp-json\/wp\/v2\/users\/59"}],"replies":[{"embeddable":true,"href":"https:\/\/www.careerlink.vn\/cam-nang-viec-lam\/wp-json\/wp\/v2\/comments?post=10802"}],"version-history":[{"count":2,"href":"https:\/\/www.careerlink.vn\/cam-nang-viec-lam\/wp-json\/wp\/v2\/posts\/10802\/revisions"}],"predecessor-version":[{"id":15614,"href":"https:\/\/www.careerlink.vn\/cam-nang-viec-lam\/wp-json\/wp\/v2\/posts\/10802\/revisions\/15614"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.careerlink.vn\/cam-nang-viec-lam\/wp-json\/wp\/v2\/media\/10803"}],"wp:attachment":[{"href":"https:\/\/www.careerlink.vn\/cam-nang-viec-lam\/wp-json\/wp\/v2\/media?parent=10802"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.careerlink.vn\/cam-nang-viec-lam\/wp-json\/wp\/v2\/categories?post=10802"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.careerlink.vn\/cam-nang-viec-lam\/wp-json\/wp\/v2\/tags?post=10802"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}