OKLCH Studio · color reference

blue-800 in OKLCH

Tailwind v4 blue-800: oklch(0.424 0.199 265.6), HEX #193CB8. WCAG + APCA pairs, Fix deep links, and @theme snippet.

blue-800 is a deep shade — strong for text on light surfaces and dark UI chrome. Pair with lighter stops for surfaces.

#193CB8 · oklch(0.424 0.199 265.6)

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 white8.82:1 · AAA · Lc 89
#193CB8 on #FFFFFF
Open in Contrast →
White on swatch8.82:1 · AAA · Lc 94
#FFFFFF on #193CB8
Open in Contrast →
Black on swatch2.38:1 · Fail · Lc 15
#000000 on #193CB8
Open in Contrast →
Suggested text on swatch8.82:1 · AAA · Lc 94
#FFFFFF on #193CB8
Open in Contrast →

Against #121212: On near-black (#121212), Fix nudges this stop to #4D7DFD for AA text.

@theme {
  --color-blue-800: oklch(0.424 0.199 265.6);
}

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