RGB ke additive 'me e entsoe ke leseli, CMYK ke subtractive 'me e entsoe ke ink. Ho fetola pakeng tsa tsona ke mohato oo moralo oa skrini o o nkang pele o ka hatsetsoa.
Mokhoa oa ho fetoha ho tloha RGB ho ea ho CMYK
- Normalisa li-channel: arola R, G le B ka 255.
- Nka channel e kholo ka ho fetisisa e normalised 'me u bapale key K = 1 − max.
- Fumana cyan, magenta le yellow ka ho tlosa karolo eo ea black: C = (1 − R − K) / (1 − K), joalo-joalo.
- Fetolela boleng bo bane kaofela ho liphesente pakeng tsa 0 le 100.
Mohlala o sebetsang
Ke kakaretso ea lipalo ntle le profaele ea 'mala. Likhoebo tsa ho hatisa li sebelisa li-profile tsa ICC le meeli ea ink, kahoo mananeo ana ke lebeletso e tiileng, ha se tlhopho e loketseng khatiso.
RGB le CMYK li hlalositsoe
Ke eng RGB?
RGB e hlalosa 'mala e le litsela tse tharo tsa leseli — red, green le blue — e ' ngoe le e ' ngoe ho tloha 0 ho isa 255. E bontša kamoo skrine e sebetsang ka teng: tse tharo kaofela ho 255 li fana ka tšoeu, kaofela ho 0 li fana ka ntsho. RGB ke khetho e nepahetseng ha o hloka ho bala le 'mala, 'me rgba() e eketsa ho pepeseha ka holim'a eona.
- Sinthaxe:
- rgb(R, G, B)
- Mekhahlelo:
- 0–255 ka tsela
- E loketse bakeng sa:
- khoutu, canvas, pepeseho ka rgba()
Ke eng CMYK?
CMYK ke mohlala oa ink o nang le mebala e mene o sebelisoang khatisong: cyan, magenta, yellow le key (black), e ' ngoe le e ' ngoe e le porsente ho tloha 0 ho isa 100. Ink e tlosa leseli ho e-na le ho e hlahisa, kahoo CMYK e akaretsa mebala e fokolang ho feta skrine — ke ka lebaka leo mebala e khanyang ea skrine hangata e shebahalang e sa khanye ha e hatsetse.
- Sinthaxe:
- cmyk(C%, M%, Y%, K%)
- Mekhahlelo:
- 0–100% ka ink
- E loketse bakeng sa:
- khatiso, liphutheloana, mesebetsi e loketseng ho hatsetsa
RGB to CMYK reference table
Mebala e tlamehang ka CSS, e fetotsoe ho tswa ho RGB ho ea ho CMYK.
| 'Mala | 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%) |