OKLCH Studio · color reference

cyan-900 in OKLCH

Tailwind v4 cyan-900: oklch(0.398 0.070 227.4), HEX #104E64. WCAG + APCA pairs, Fix deep links, and @theme snippet.

cyan-900 is a deep shade — strong for text on light surfaces and dark UI chrome. Pair with lighter stops for surfaces.

#104E64 · oklch(0.398 0.070 227.4)

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 white9.15:1 · AAA · Lc 91
#104E64 on #FFFFFF
Open in Contrast →
White on swatch9.15:1 · AAA · Lc 95
#FFFFFF on #104E64
Open in Contrast →
Black on swatch2.30:1 · Fail · Lc 13
#000000 on #104E64
Open in Contrast →
Suggested text on swatch9.15:1 · AAA · Lc 95
#FFFFFF on #104E64
Open in Contrast →

Against #121212: On near-black (#121212), Fix nudges this stop to #5088A0 for AA text.

@theme {
  --color-cyan-900: oklch(0.398 0.070 227.4);
}

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