HEX to OKLCH: #831843

Result

Values are shown at full precision, so converting back gives exactly #831843. 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: 131/255 = 0.51373 → 0.226966  (((x + 0.055) / 1.055)^2.4)
   G: 24/255 = 0.09412 → 0.009134  (((x + 0.055) / 1.055)^2.4)
   B: 67/255 = 0.26275 → 0.056128  (((x + 0.055) / 1.055)^2.4)

2. 2. linear sRGB → LMS

   l = 0.4122·R + 0.5363·G + 0.0514·B = 0.101347
   m = 0.2119·R + 0.6807·G + 0.1074·B = 0.060340
   s = 0.0883·R + 0.2817·G + 0.6300·B = 0.057975

3. 3. cube root

   l′ = ∛0.101347 = 0.466233
   m′ = ∛0.060340 = 0.392226
   s′ = ∛0.057975 = 0.387031

4. 4. LMS′ → Oklab

   L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.40782
   a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = 0.14405
   b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = 0.00612

5. 5. Oklab → OKLCH

   C = √(a² + b²) = 0.14418
   H = atan2(b, a) = 2.432°
   L = 0.40782

6. 6. OKLCH

   oklch(0.40782 0.14418 2.432)
   rounded: oklch(0.408 0.144 2.4)

All formats

HEX

#831843

RGB

rgb(131 24 67)

RGB (legacy)

rgb(131, 24, 67)

HSL

hsl(335.89 69.03% 30.39%) → hsl(336 69% 30%)

HWB

hwb(336 9% 49%)

OKLCH

oklch(0.408 0.144 2.4) · oklch(40.8% 0.144 2.4)

OKLab

oklab(0.408 0.144 0.006)

Lab (D50)

lab(29.53 46.64 3.14)

LCH (D50)

lch(29.53 46.75 3.85)

Display P3

color(display-p3 0.4711 0.1351 0.2616)

Linear sRGB

color(srgb-linear 0.2270 0.0091 0.0561)

Gamut: sRGB and Display P3

#831843 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.165 and Display P3 reaches 0.185; this color uses 88% of the sRGB chroma available.

CSS snippets

.element {
  color: #831843;
  color: rgb(131 24 67);
  color: hsl(336 69% 30%);
  color: oklch(0.408 0.144 2.4);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.408 0.144 2.4);
}
/* arbitrary values */
class="text-[#831843] bg-[oklch(0.408_0.144_2.4)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.4711 0.1351 0.2616); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #831843 calc(l - 0.1) c h); }

Nearby colors

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

• pink-900#861043
• v3 rose-900#881337
• rose-900#8B0836
• v3 pink-800#9D174D
• v3 red-900#7F1D1D
• red-900#82181A
• v3 rose-800#9F1239
• pink-800#A3004C

Lighter and darker, same hue and chroma

• #972D53 · oklch(0.468 0.144 2.4) · ΔL +0.06
• #6F0033 · oklch(0.348 0.144 2.4) · ΔL −0.06

Open in the studio