He tāpiri a RGB, he rama; he whakaheke a CMYK, he mīhini karaihe ā-inki. Ko te huringa i waenganui i a rātou te mahi e mahia ana i ngā hoahoa mata i mua i te tāhanga.
Me pēhea te hurihanga RGB ki CMYK
- Whakapaingia ngā hongere: wehihia R, G me B ki te 255.
- Tīpakohia te hongere nui rawa i muri i te whakapainga ka tatau i te key K = 1 − max.
- Whakawhanakehia te cyan, magenta me te yellow mā te tango i taua wāhanga pango: C = (1 − R − K) / (1 − K), ā, ka pēnei tonu mō M me Y.
- Huria ngā uara e whā katoa ki ngā paihikara i waenga i te 0 me te 100.
Tauira mahi
He tatauranga pāngarau, kāore he kōwae tae (color profile). Ka whakamahi ngā toa tā i ngā kōwae ICC me ngā here inki, nō reira he tohu pai ēnei nama, kaua hei wehehanga pūrongo tā-kore.
Ngā whakamārama mō RGB me CMYK
He aha te RGB?
Kei te whakamārama a RGB i tētahi tae hei toru ngā hongere o te rama — whero, karaka me kikorangi — ia kotahi mai i 0 ki 255. Ka whakaata i te mahi o ngā mata: ka riro ko te ma mēnā e toru katoa kei te 255, ko te pango mēnā e toru kei te 0. He pai te RGB mēnā me tatau koe ki tētahi tae, ā, ka tāpirihia e rgba() te marama ārai.
- Hōtaka:
- rgb(R, G, B)
- Awhe:
- 0–255 mō ia hongere
- Pai mō:
- waehere, canvas, marama ārai mā rgba()
He aha te CMYK?
He tauira pēne e whā te CMYK e whakamahia ana i te tā: cyan, magenta, kōwhai me te kī (pango), ia kotahi hei ōrau mai i te 0 ki te 100. Ka tango e te mīhini te rama, kāore e tuku ana, nō reira he iti ake ngā tae ka āhei i te CMYK i te mata — koia te take ka āhua mēnā he kōwhai whakaroto ngā tae mata i te wā e tāia ana.
- Hōtaka:
- cmyk(C%, M%, Y%, K%)
- Awhe:
- 0–100% mō ia pene
- Pai mō:
- tā, mōkihi, toi kua rite mō te pēhi
Ripanga tohutoro RGB ki CMYK
Ngā tae CSS tino noa, kua tahuri mai i RGB ki CMYK.
| Tae | 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%) |