HEX to HSL: #111827

Also known as: Tailwind v3 gray-900

#111827 → hsl(221 39% 11%)

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. RGB ÷ 255
```
R = 0.0667
G = 0.0941
B = 0.1529
```

2. max, min, Δ

max = 0.1529
min = 0.0667
Δ = max − min = 0.0863

3. L
```
L = (max + min) / 2 = 0.1098 = 10.98%
```

4. S

S = Δ / (1 − |2L − 1|) = 0.3929 = 39.29%

5. H

max is B → H = 60° × ((R − G) / Δ + 4) = 60° × ((0.0667 − 0.0941) / 0.0863 + 4) = 220.91°

6. HSL
```
hsl(220.91 39.29% 10.98%)
```

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).

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

Open in the studio

Open in the OKLCH picker Check contrast on white

Other converters for this color

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Guides: What is OKLCH?