OKLCH Studio · color reference

red-700 in OKLCH

Tailwind v4 red-700: oklch(0.505 0.213 27.5), HEX #C10007. WCAG + APCA pairs, Fix deep links, and @theme snippet.

red-700 is a saturated mid-dark — good for primary buttons and links on light surfaces; often works as background with light text after Fix.

#C10007 · oklch(0.505 0.213 27.5)

Contrast pairs

WCAG 2.1 normal text + APCA Lc. Open a pair in the live Fix tool — informational only, not a legal audit.

Text on white6.42:1 · AA · Lc 79
#C10007 on #FFFFFF
Open in Contrast →
White on swatch6.42:1 · AA · Lc 84
#FFFFFF on #C10007
Open in Contrast →
Black on swatch3.27:1 · Fail · Lc 25
#000000 on #C10007
Open in Contrast →
Suggested text on swatch6.42:1 · AA · Lc 84
#FFFFFF on #C10007
Open in Contrast →

Against #121212: On near-black (#121212), Fix nudges this stop to #ED3D36 for AA text.

@theme {
  --color-red-700: oklch(0.505 0.213 27.5);
}

Static reference — the live Fix tool uses the same WCAG math with Undo and share links.