OKLCH Studio · color reference

red-600 in OKLCH

Tailwind v4 red-600: oklch(0.577 0.245 27.3), HEX #E7000B. WCAG + APCA pairs, Fix deep links, and @theme snippet.

red-600 is a saturated mid-dark — good for primary buttons and links on light surfaces; often works as background with light text after Fix.

#E7000B · oklch(0.577 0.245 27.3)

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 white4.77:1 · AA · Lc 70
#E7000B on #FFFFFF
Open in Contrast →
White on swatch4.77:1 · AA · Lc 76
#FFFFFF on #E7000B
Open in Contrast →
Black on swatch4.40:1 · Fail · Lc 34
#000000 on #E7000B
Open in Contrast →
Suggested text on swatch4.77:1 · AA · Lc 76
#FFFFFF on #E7000B
Open in Contrast →

Against #121212: On near-black (#121212), Fix nudges this stop to #F61520 for AA text.

@theme {
  --color-red-600: oklch(0.577 0.245 27.3);
}

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