HSL to HEX: #111827

Result

Values are shown at full precision, so converting back gives exactly #111827. 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

   H = 220.91°, S = 39.29%, L = 10.98%

2. 2. C

   C = (1 − |2L − 1|) × S = 0.08628

3. 3. X

   X = C × (1 − |(H / 60°) mod 2 − 1|) = 0.02745   (H / 60° = 3.6818, sector 3)

4. 4. m

   m = L − C / 2 = 0.06666

5. 5. (R′, G′, B′) + m

   (R′, G′, B′) = (0.00000, 0.02745, 0.08628)
   R = round((0.00000 + 0.06666) × 255) = 17
   G = round((0.02745 + 0.06666) × 255) = 24
   B = round((0.08628 + 0.06666) × 255) = 39

6. 6. RGB → HEX

   #111827

All formats

HEX

#111827

RGB

rgb(17 24 39)

RGB (legacy)

rgb(17, 24, 39)

HSL

hsl(220.91 39.29% 10.98%) → hsl(221 39% 11%)

HWB

hwb(221 7% 85%)

OKLCH

oklch(0.210 0.032 264.7) · oklch(21.0% 0.032 264.7)

OKLab

oklab(0.210 -0.003 -0.032)

Lab (D50)

lab(8.15 0.64 -11.47)

LCH (D50)

lch(8.15 11.49 273.21)

Display P3

color(display-p3 0.0722 0.0933 0.1484)

Linear sRGB

color(srgb-linear 0.0056 0.0091 0.0203)

Gamut: sRGB and Display P3

#111827 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.145 and Display P3 reaches 0.145; this color uses 22% of the sRGB chroma available.

CSS snippets

.element {
  color: #111827;
  color: rgb(17 24 39);
  color: hsl(221 39% 11%);
  color: oklch(0.210 0.032 264.7);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.210 0.032 264.7);
}
/* arbitrary values */
class="text-[#111827] bg-[oklch(0.210_0.032_264.7)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.0722 0.0933 0.1484); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #111827 calc(l - 0.1) c h); }

Nearby colors

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

• gray-900#101828
• v3 slate-900#0F172A
• slate-900#0F172B
• zinc-900#18181B
• mauve-900#1D161E
• mist-900#161B1D
• neutral-900#171717
• stone-900#1C1917

Lighter and darker, same hue and chroma

• #1F2636 · oklch(0.270 0.032 264.7) · ΔL +0.06
• #050B19 · oklch(0.150 0.032 264.7) · ΔL −0.06

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