OKLCH Studio · color reference

yellow-400 in OKLCH

Tailwind v4 yellow-400: oklch(0.852 0.199 91.9), HEX #FDC700. WCAG + APCA pairs, Fix deep links, and @theme snippet.

yellow-400 sits in the mid-light range — useful for secondary surfaces and large display type after a contrast check.

#FDC700 · oklch(0.852 0.199 91.9)

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 white1.57:1 · Fail · Lc 26
#FDC700 on #FFFFFF
Open in Contrast →
White on swatchnot a suggestion1.57:1 · Fail · Lc 29
#FFFFFF on #FDC700
Demo of a common fail — not a suggestion.
Open in Contrast →
Black on swatch13.35:1 · AAA · Lc 78
#000000 on #FDC700
Open in Contrast →
Fix → AA on white5.19:1 · AA · Lc 75
#966200 on #FFFFFF
Open in Contrast →
Suggested text on swatch12.35:1 · AAA · Lc 78
#0D0D0D on #FDC700
Open in Contrast →

Against #121212: This stop already passes AA as text on #121212 (11.91:1).

@theme {
  --color-yellow-400: oklch(0.852 0.199 91.9);
}

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