HEX to OKLCH: #7E2A0C

Result

Values are shown at full precision, so converting back gives exactly #7e2a0c. 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. 1. sRGB → linear

   R: 126/255 = 0.49412 → 0.208637  (((x + 0.055) / 1.055)^2.4)
   G: 42/255 = 0.16471 → 0.023153  (((x + 0.055) / 1.055)^2.4)
   B: 12/255 = 0.04706 → 0.003677  (((x + 0.055) / 1.055)^2.4)

2. 2. linear sRGB → LMS

   l = 0.4122·R + 0.5363·G + 0.0514·B = 0.098612
   m = 0.2119·R + 0.6807·G + 0.1074·B = 0.060366
   s = 0.0883·R + 0.2817·G + 0.6300·B = 0.027262

3. 3. cube root

   l′ = ∛0.098612 = 0.462001
   m′ = ∛0.060366 = 0.392282
   s′ = ∛0.027262 = 0.300967

4. 4. LMS′ → Oklab

   L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.40733
   a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = 0.09676
   b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = 0.07565

5. 5. Oklab → OKLCH

   C = √(a² + b²) = 0.12282
   H = atan2(b, a) = 38.020°
   L = 0.40733

6. 6. OKLCH

   oklch(0.40733 0.12282 38.020)
   rounded: oklch(0.407 0.123 38.0)

All formats

HEX

#7e2a0c

RGB

rgb(126 42 12)

RGB (legacy)

rgb(126, 42, 12)

HSL

hsl(15.79 82.61% 27.06%) → hsl(16 83% 27%)

HWB

hwb(16 5% 51%)

OKLCH

oklch(0.407 0.123 38.0) · oklch(40.7% 0.123 38.0)

OKLab

oklab(0.407 0.097 0.076)

Lab (D50)

lab(30.22 36.03 37.43)

LCH (D50)

lch(30.22 51.96 46.09)

Display P3

color(display-p3 0.4562 0.1874 0.0903)

Linear sRGB

color(srgb-linear 0.2086 0.0232 0.0037)

Gamut: sRGB and Display P3

#7E2A0C is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.133 and Display P3 reaches 0.150; this color uses 92% of the sRGB chroma available.

CSS snippets

.element {
  color: #7e2a0c;
  color: rgb(126 42 12);
  color: hsl(16 83% 27%);
  color: oklch(0.407 0.123 38.0);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.407 0.123 38.0);
}
/* arbitrary values */
class="text-[#7e2a0c] bg-[oklch(0.407_0.123_38.0)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.4562 0.1874 0.0903); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #7e2a0c calc(l - 0.1) c h); }

Nearby colors

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

• v3 orange-900#7C2D12
• amber-900#7B3306
• v3 amber-900#78350F
• v3 red-900#7F1D1D
• red-900#82181A
• darkred#8B0000
• yellow-900#733E0A
• maroon#800000

Lighter and darker, same hue and chroma

• #913C20 · oklch(0.467 0.123 38.0) · ΔL +0.06
• #6B1700 · oklch(0.347 0.123 38.0) · ΔL −0.06

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