OKLCH to HEX: #161B1D

Result

Values are shown at full precision, so converting back gives exactly #161b1d. 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. input

   oklch(0.21782 0.00848 223.872)

2. 2. OKLCH → Oklab

   a = C·cos H = -0.00611
   b = C·sin H = -0.00588

3. 3. Oklab → LMS′

   l′ = L + 0.3963·a + 0.2158·b = 0.214129
   m′ = L − 0.1056·a − 0.0639·b = 0.218841
   s′ = L − 0.0895·a − 1.2915·b = 0.225957

4. 4. cube

   l = 0.214129³ = 0.009818
   m = 0.218841³ = 0.010481
   s = 0.225957³ = 0.011537

5. 5. LMS → linear sRGB

   R = 4.0767·l − 3.3077·m + 0.2310·s = 0.008024
   G = −1.2684·l + 2.6098·m − 0.3413·s = 0.010960
   B = −0.0042·l − 0.7034·m + 1.7076·s = 0.012287

6. 6. linear → sRGB, × 255

   R = 0.08628 × 255 = 22.00 → 22
   G = 0.10588 × 255 = 27.00 → 27
   B = 0.11373 × 255 = 29.00 → 29

7. 7. RGB → HEX

   #161B1D

All formats

HEX

#161b1d

RGB

rgb(22 27 29)

RGB (legacy)

rgb(22, 27, 29)

HSL

hsl(197.14 13.73% 10.00%) → hsl(197 14% 10%)

HWB

hwb(197 9% 89%)

OKLCH

oklch(0.218 0.008 223.9) · oklch(21.8% 0.008 223.9)

OKLab

oklab(0.218 -0.006 -0.006)

Lab (D50)

lab(9.31 -1.99 -2.23)

LCH (D50)

lch(9.31 2.99 228.19)

Display P3

color(display-p3 0.0900 0.1053 0.1128)

Linear sRGB

color(srgb-linear 0.0080 0.0110 0.0123)

Gamut: sRGB and Display P3

#161B1D is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.041 and Display P3 reaches 0.054; this color uses 21% of the sRGB chroma available.

CSS snippets

.element {
  color: #161b1d;
  color: rgb(22 27 29);
  color: hsl(197 14% 10%);
  color: oklch(0.218 0.008 223.9);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.218 0.008 223.9);
}
/* arbitrary values */
class="text-[#161b1d] bg-[oklch(0.218_0.008_223.9)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.0900 0.1053 0.1128); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #161b1d calc(l - 0.1) c h); }

Nearby colors

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

• zinc-900#18181B
• stone-900#1C1917
• neutral-900#171717
• taupe-900#1D1816
• olive-900#1D1D16
• mauve-900#1D161E
• v3 gray-900#111827
• gray-900#101828

Lighter and darker, same hue and chroma

• #24292B · oklch(0.278 0.008 223.9) · ΔL +0.06
• #090E0F · oklch(0.158 0.008 223.9) · ΔL −0.06

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