HEX to OKLCH: #7C2D12

Result

Values are shown at full precision, so converting back gives exactly #7c2d12. 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: 124/255 = 0.48627 → 0.201556  (((x + 0.055) / 1.055)^2.4)
   G: 45/255 = 0.17647 → 0.026241  (((x + 0.055) / 1.055)^2.4)
   B: 18/255 = 0.07059 → 0.006049  (((x + 0.055) / 1.055)^2.4)

2. 2. linear sRGB → LMS

   l = 0.4122·R + 0.5363·G + 0.0514·B = 0.097471
   m = 0.2119·R + 0.6807·G + 0.1074·B = 0.061222
   s = 0.0883·R + 0.2817·G + 0.6300·B = 0.029001

3. 3. cube root

   l′ = ∛0.097471 = 0.460213
   m′ = ∛0.061222 = 0.394128
   s′ = ∛0.029001 = 0.307236

4. 4. LMS′ → Oklab

   L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.40839
   a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = 0.09156
   b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = 0.07198

5. 5. Oklab → OKLCH

   C = √(a² + b²) = 0.11647
   H = atan2(b, a) = 38.172°
   L = 0.40839

6. 6. OKLCH

   oklch(0.40839 0.11647 38.172)
   rounded: oklch(0.408 0.116 38.2)

All formats

HEX

#7c2d12

RGB

rgb(124 45 18)

RGB (legacy)

rgb(124, 45, 18)

HSL

hsl(15.28 74.65% 27.84%) → hsl(15 75% 28%)

HWB

hwb(15 7% 51%)

OKLCH

oklch(0.408 0.116 38.2) · oklch(40.8% 0.116 38.2)

OKLab

oklab(0.408 0.092 0.072)

Lab (D50)

lab(30.41 33.99 34.58)

LCH (D50)

lch(30.41 48.49 45.49)

Display P3

color(display-p3 0.4497 0.1966 0.1052)

Linear sRGB

color(srgb-linear 0.2016 0.0262 0.0060)

Gamut: sRGB and Display P3

#7C2D12 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 87% of the sRGB chroma available.

CSS snippets

.element {
  color: #7c2d12;
  color: rgb(124 45 18);
  color: hsl(15 75% 28%);
  color: oklch(0.408 0.116 38.2);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.408 0.116 38.2);
}
/* arbitrary values */
class="text-[#7c2d12] bg-[oklch(0.408_0.116_38.2)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.4497 0.1966 0.1052); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #7c2d12 calc(l - 0.1) c h); }

Nearby colors

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

• orange-900#7E2A0C
• amber-900#7B3306
• v3 amber-900#78350F
• v3 red-900#7F1D1D
• red-900#82181A
• yellow-900#733E0A
• v3 yellow-900#713F12
• darkred#8B0000

Lighter and darker, same hue and chroma

• #8F3F25 · oklch(0.468 0.116 38.2) · ΔL +0.06
• #691B00 · oklch(0.348 0.116 38.2) · ΔL −0.06

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