HEX to OKLCH: #FEF3C7

Also known as: Tailwind v3 amber-100

#FEF3C7 → oklch(0.962 0.058 95.6)

Values are shown at full precision, so converting back gives exactly #fef3c7. The rounded form is what you normally paste into CSS.

Step-by-step math

Every number below is computed from the input, nothing is looked up.

1. sRGB → linear

R: 254/255 = 0.99608 → 0.991102  (((x + 0.055) / 1.055)^2.4)
G: 243/255 = 0.95294 → 0.896269  (((x + 0.055) / 1.055)^2.4)
B: 199/255 = 0.78039 → 0.571125  (((x + 0.055) / 1.055)^2.4)

2. linear sRGB → LMS

l = 0.4122·R + 0.5363·G + 0.0514·B = 0.918634
m = 0.2119·R + 0.6807·G + 0.1074·B = 0.881445
s = 0.0883·R + 0.2817·G + 0.6300·B = 0.699809

3. cube root

l′ = ∛0.918634 = 0.972107
m′ = ∛0.881445 = 0.958808
s′ = ∛0.699809 = 0.887823

4. LMS′ → Oklab

L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.96190
a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = -0.00568
b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = 0.05775

5. Oklab → OKLCH

C = √(a² + b²) = 0.05803
H = atan2(b, a) = 95.617°
L = 0.96190

6. OKLCH

oklch(0.96190 0.05803 95.617)
rounded: oklch(0.962 0.058 95.6)

All formats

HEX: #fef3c7
RGB: rgb(254 243 199)
RGB (legacy): rgb(254, 243, 199)
HSL: hsl(48.00 96.49% 88.82%) → hsl(48 96% 89%)
HWB: hwb(48 78% 0%)
OKLCH: oklch(0.962 0.058 95.6) · oklch(96.2% 0.058 95.6)
OKLab: oklab(0.962 -0.006 0.058)
Lab (D50): lab(95.90 -1.21 22.71)
LCH (D50): lch(95.90 22.75 93.05)
Display P3: color(display-p3 0.9886 0.9544 0.7988)
Linear sRGB: color(srgb-linear 0.9911 0.8963 0.5711)

Gamut: sRGB and Display P3

#FEF3C7 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.063 and Display P3 reaches 0.075; this color uses 92% of the sRGB chroma available.

CSS snippets

.element {
  color: #fef3c7;
  color: rgb(254 243 199);
  color: hsl(48 96% 89%);
  color: oklch(0.962 0.058 95.6);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.962 0.058 95.6);
}
/* arbitrary values */
class="text-[#fef3c7] bg-[oklch(0.962_0.058_95.6)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.9886 0.9544 0.7988); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #fef3c7 calc(l - 0.1) c h); }

Nearby colors

Closest colors in the Tailwind and CSS named palettes (OKLab distance).

Lighter and darker, same hue and chroma

#FFFFD3 · oklch(1.000 0.058 95.6) · ΔL +0.06
#EADFB4 · oklch(0.902 0.058 95.6) · ΔL −0.06

Open in the studio

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Guides: What is OKLCH?