HEX to OKLCH: #0A0A0A

Result

Values are shown at full precision, so converting back gives exactly #0a0a0a. 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: 10/255 = 0.03922 → 0.003035  (÷ 12.92)
   G: 10/255 = 0.03922 → 0.003035  (÷ 12.92)
   B: 10/255 = 0.03922 → 0.003035  (÷ 12.92)

2. 2. linear sRGB → LMS

   l = 0.4122·R + 0.5363·G + 0.0514·B = 0.003035
   m = 0.2119·R + 0.6807·G + 0.1074·B = 0.003035
   s = 0.0883·R + 0.2817·G + 0.6300·B = 0.003035

3. 3. cube root

   l′ = ∛0.003035 = 0.144788
   m′ = ∛0.003035 = 0.144788
   s′ = ∛0.003035 = 0.144788

4. 4. LMS′ → Oklab

   L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.14479
   a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = 0.00000
   b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = 0.00000

5. 5. Oklab → OKLCH

   C = √(a² + b²) = 0.00000
   H: a and b are ~0, so the hue is undefined (written as 0)
   L = 0.14479

6. 6. OKLCH

   oklch(0.14479 0.00000 0.000)
   rounded: oklch(0.145 0.000 0.0)

All formats

HEX

#0a0a0a

RGB

rgb(10 10 10)

RGB (legacy)

rgb(10, 10, 10)

HSL

hsl(0.00 0.00% 3.92%) → hsl(0 0% 4%)

HWB

hwb(0 4% 96%)

OKLCH

oklch(0.145 0.000 0.0) · oklch(14.5% 0.000 0.0)

OKLab

oklab(0.145 0.000 0.000)

Lab (D50)

lab(2.74 0.00 0.00)

LCH (D50)

lch(2.74 0.00 0.00)

Display P3

color(display-p3 0.0392 0.0392 0.0392)

Linear sRGB

color(srgb-linear 0.0030 0.0030 0.0030)

Gamut: sRGB and Display P3

#0A0A0A is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.059 and Display P3 reaches 0.066; this color uses 0% of the sRGB chroma available.

CSS snippets

.element {
  color: #0a0a0a;
  color: rgb(10 10 10);
  color: hsl(0 0% 4%);
  color: oklch(0.145 0.000 0.0);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.145 0.000 0.0);
}
/* arbitrary values */
class="text-[#0a0a0a] bg-[oklch(0.145_0.000_0.0)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.0392 0.0392 0.0392); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #0a0a0a calc(l - 0.1) c h); }

Nearby colors

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

• stone-950#0C0A09
• mist-950#090B0C
• zinc-950#09090B
• mauve-950#0C090C
• olive-950#0C0C09
• gray-950#030712
• v3 slate-950#020617
• slate-950#020618

Lighter and darker, same hue and chroma

• #171717 · oklch(0.205 0.000 0.0) · ΔL +0.06
• #020202 · oklch(0.085 0.000 0.0) · ΔL −0.06

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