OKLCH Studio · color reference

emerald-50 in OKLCH

Tailwind v4 emerald-50: oklch(0.979 0.021 166.1), HEX #ECFDF5. WCAG + APCA pairs, Fix deep links, and @theme snippet.

emerald-50 is a light tint — best for soft backgrounds, chips, and borders. Prefer darker ink for body text; check Fix if you put text on it.

#ECFDF5 · oklch(0.979 0.021 166.1)

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 white1.05:1 · Fail · Lc 0
#ECFDF5 on #FFFFFF
Open in Contrast →
White on swatchnot a suggestion1.05:1 · Fail · Lc 0
#FFFFFF on #ECFDF5
Demo of a common fail — not a suggestion.
Open in Contrast →
Black on swatch19.94:1 · AAA · Lc 102
#000000 on #ECFDF5
Open in Contrast →
Fix → AA on white5.06:1 · AA · Lc 75
#63726C on #FFFFFF
Open in Contrast →
Suggested text on swatch18.45:1 · AAA · Lc 102
#0D0D0D on #ECFDF5
Open in Contrast →

Against #121212: This stop already passes AA as text on #121212 (17.78:1).

@theme {
  --color-emerald-50: oklch(0.979 0.021 166.1);
}

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