RGB ndi yonse ya kuwonjezera ndipo imapangidwa ndi nyali, CMYK ndi yochotsa ndipo imapangidwa ndi inki. Kusintha pakati pawo ndi sitepe yomwe kapangidwe ka skrini konse kamatenga asanapereke.
Mmene kusintha kwa RGB kukhala CMYK kumagwirira ntchito
- Normalaizani ma channel: gawani R, G ndi B ndi 255.
- Tengani channel yokulirapo ya normalaizidwa ndikuwerengera key K = 1 − max.
- Pangani cyan, magenta ndi yellow pothetsa gawo lakuda: C = (1 − R − K) / (1 − K), ndi zina zotero.
- Sinthani ma value onse anayi kukhala ma percent pakati pa 0 ndi 100.
Chitsanzo chomwe chagwira ntchito
Ndikhompyuta ya mathos. Popanda color profile. Ma print shop amagwiritsa ntchito ICC profiles ndi ink limits, kotero manambala awa ndi reference yolimba, osati separation yokonzekera bokosi la print.
RGB and CMYK explained
Kodi RGB ndi chiyani?
RGB imafotokozera mtundu monga njira zitatu za kuwala — red, green ndi blue — iliyonse kuchokera ku 0 mpaka 255. Izi zikufanana ndi momwe ma skrini amagwirira ntchito: zonse zitatu pa 255 zikupereka white, zonse pa 0 zikupereka black. RGB ndi yabwino pamene mukufunika kuwerenga manambala ndi mtundu, ndipo rgba() imawonjezera translucent.
- Syntax:
- rgb(R, G, B)
- Range:
- 0–255 pa channel
- Best for:
- code, canvas, kusintha kuwonekera ndi rgba()
Kodi CMYK ndi chiyani?
CMYK ndi mawonekedwe a inki zinayi omwe amagwiritsidwa ntchito pa kusindikiza: cyan, magenta, yellow ndi key (black), iliyonse monga peresenti kuchokera ku 0 mpaka 100. Inki imatchula kuwala osati kumatulutsa, choncho CMYK imatha kufunsa mitundu yochepa kuposa skrini — chifukwa chake mitundu yowala ya skrini nthawi zina imawoneka yofooka ikasindikizidwa.
- Syntax:
- cmyk(C%, M%, Y%, K%)
- Range:
- 0–100% pa inki
- Best for:
- kusindikiza, zakatoni, ntchito zokonzekera kwa press
RGB to CMYK reference table
Mitundu yophweka kwambiri ya CSS, yasinthidwa kuchokera ku RGB kupita ku CMYK.
| Mtundu | 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%) |