RGB waa isku-dar iftiin (additive) halka CMYK uu yahay ka-jarid (subtractive) oo ka samaysan khad. Beddelidda labadaba waa talaabada naqshad kasta oo shaashad ah ka hor inta aan la daabicin.
Sida RGB ilaa CMYK beddelku u shaqeeyo
- Normaaliso kanaallada: qaybso R, G iyo B 255.
- Qaado kanaalka ugu weyn ee la normaliyey oo xisaabi key K = 1 − max.
- Soo hel cyan, magenta iyo yellow adigoo ka saaraya saamiga midabka madow: C = (1 − R − K) / (1 − K), iyo wixii la mid ah.
- Beddel dhammaan afarta qiime boqolleyda u dhaxaysa 0 iyo 100.
Tusaale shaqeeyay
Waa qiyaas xisaabeed oo aan lahayn profile midab. Warshadaha daabacaadda waxay isticmaalaan profiles ICC iyo xadidaadaha khadadka, markaa tirooyinkan waa tixraac adag, maaha kala-sooc diyaar u ah press-ka.
RGB iyo CMYK sharaxan
Waa maxay RGB?
RGB wuxuu sharraxayaa midab sida saddex kanaal oo iftiin ah — casaanka, cagaaran iyo buluug — midkiiba 0 ilaa 255. Waxay ka tarjumaysaa sida shaashaduhu dhab ahaantii u shaqeeyaan: saddexduba marka ay 255 yihiin waxay bixiyaan caddaan, dhammaantood marka ay 0 yihiin waxay bixiyaan madow. RGB waa doorashada saxda marka aad u baahan tahay inaad xisaabiso midabka, waxaana rgba() ku darayaa hufnaan dheeraad ah.
- Nidaamka qoraalka:
- rgb(R, G, B)
- Xadka:
- 0–255 per channel
- Ku habboon:
- koodh, canvas, hufnaan leh rgba()
Waa maxay CMYK?
CMYK waa moodelka afarta-ink oo loo isticmaalo daabacaadda: cyan, magenta, yellow iyo key (madow), midkiiba boqolkiiba 0 ilaa 100. Xarfaha ink-ka waxay ka jarayaan iftiin halkii ay ka sii dayn lahaayeen, sidaa darteed CMYK wuxuu daboolaa midabyo ka yar shaashadda — taasoo ah sababta midabada dhalaalaya ee shaashadda ay mararka qaarkood u muuqdaan kuwo liita marka la daabaco.
- Nidaamka qoraalka:
- cmyk(C%, M%, Y%, K%)
- Xadka:
- 0–100% per ink
- Ku habboon:
- daabac, baakadaha, shaqo diyaar u ah press
RGB ilaa CMYK jadwal tixraac
Midabada CSS ee ugu caansan, laga beddelay RGB ilaa CMYK.
| Midab | RGB | CMYK |
|---|---|---|
| black | rgb(0, 0, 0) | cmyk(0%, 0%, 0%, 100%) |
| white | rgb(255, 255, 255) | cmyk(0%, 0%, 0%, 0%) |
| red | rgb(255, 0, 0) | cmyk(0%, 100%, 100%, 0%) |
| lime | rgb(0, 255, 0) | cmyk(100%, 0%, 100%, 0%) |
| blue | rgb(0, 0, 255) | cmyk(100%, 100%, 0%, 0%) |
| yellow | rgb(255, 255, 0) | cmyk(0%, 0%, 100%, 0%) |
| orange | rgb(255, 165, 0) | cmyk(0%, 35%, 100%, 0%) |
| teal | rgb(0, 128, 128) | cmyk(100%, 0%, 0%, 50%) |
| purple | rgb(128, 0, 128) | cmyk(0%, 100%, 0%, 50%) |
| gray | rgb(128, 128, 128) | cmyk(0%, 0%, 0%, 50%) |