HEX to OKLCH: #451A03

Also known as: Tailwind v3 amber-950

#451A03 → oklch(0.279 0.074 45.6)

Values are shown at full precision, so converting back gives exactly #451a03. 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: 69/255 = 0.27059 → 0.059511  (((x + 0.055) / 1.055)^2.4)
G: 26/255 = 0.10196 → 0.010330  (((x + 0.055) / 1.055)^2.4)
B: 3/255 = 0.01176 → 0.000911  (÷ 12.92)

2. linear sRGB → LMS

l = 0.4122·R + 0.5363·G + 0.0514·B = 0.030119
m = 0.2119·R + 0.6807·G + 0.1074·B = 0.019740
s = 0.0883·R + 0.2817·G + 0.6300·B = 0.008739

3. cube root

l′ = ∛0.030119 = 0.311133
m′ = ∛0.019740 = 0.270260
s′ = ∛0.008739 = 0.205976

4. LMS′ → Oklab

L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.27912
a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = 0.05188
b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = 0.05304

5. Oklab → OKLCH

C = √(a² + b²) = 0.07420
H = atan2(b, a) = 45.635°
L = 0.27912

6. OKLCH

oklch(0.27912 0.07420 45.635)
rounded: oklch(0.279 0.074 45.6)

All formats

HEX: #451a03
RGB: rgb(69 26 3)
RGB (legacy): rgb(69, 26, 3)
HSL: hsl(20.91 91.67% 14.12%) → hsl(21 92% 14%)
HWB: hwb(21 1% 73%)
OKLCH: oklch(0.279 0.074 45.6) · oklch(27.9% 0.074 45.6)
OKLab: oklab(0.279 0.052 0.053)
Lab (D50): lab(15.85 20.07 22.65)
LCH (D50): lch(15.85 30.26 48.45)
Display P3: color(display-p3 0.2498 0.1119 0.0335)
Linear sRGB: color(srgb-linear 0.0595 0.0103 0.0009)

Gamut: sRGB and Display P3

#451A03 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.079 and Display P3 reaches 0.090; this color uses 94% of the sRGB chroma available.

CSS snippets

.element {
  color: #451a03;
  color: rgb(69 26 3);
  color: hsl(21 92% 14%);
  color: oklch(0.279 0.074 45.6);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.279 0.074 45.6);
}
/* arbitrary values */
class="text-[#451a03] bg-[oklch(0.279_0.074_45.6)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.2498 0.1119 0.0335); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #451a03 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

#562A13 · oklch(0.339 0.074 45.6) · ΔL +0.06
#340A00 · oklch(0.219 0.074 45.6) · ΔL −0.06

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