HEX to RGB: #1F2937

Result

Values are shown at full precision, so converting back gives exactly #1f2937. 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. HEX → pairs

   #1F2937 → 1F | 29 | 37

2. 2. base 16 → base 10

   R = 1F₁₆ = 1×16 + 15 = 31
   G = 29₁₆ = 2×16 + 9 = 41
   B = 37₁₆ = 3×16 + 7 = 55

3. 3. RGB

   rgb(31 41 55)

All formats

HEX

#1f2937

RGB

rgb(31 41 55)

RGB (legacy)

rgb(31, 41, 55)

HSL

hsl(215.00 27.91% 16.86%) → hsl(215 28% 17%)

HWB

hwb(215 12% 78%)

OKLCH

oklch(0.278 0.030 256.8) · oklch(27.8% 0.030 256.8)

OKLab

oklab(0.278 -0.007 -0.029)

Lab (D50)

lab(16.14 -1.18 -10.57)

LCH (D50)

lch(16.14 10.64 263.63)

Display P3

color(display-p3 0.1294 0.1596 0.2110)

Linear sRGB

color(srgb-linear 0.0137 0.0222 0.0382)

Gamut: sRGB and Display P3

#1F2937 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.098 and Display P3 reaches 0.125; this color uses 30% of the sRGB chroma available.

CSS snippets

.element {
  color: #1f2937;
  color: rgb(31 41 55);
  color: hsl(215 28% 17%);
  color: oklch(0.278 0.030 256.8);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.278 0.030 256.8);
}
/* arbitrary values */
class="text-[#1f2937] bg-[oklch(0.278_0.030_256.8)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.1294 0.1596 0.2110); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #1f2937 calc(l - 0.1) c h); }

Nearby colors

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

• gray-800#1E2939
• v3 slate-800#1E293B
• slate-800#1D293D
• mist-800#22292B
• zinc-800#27272A
• neutral-800#262626
• mauve-800#2A212C
• stone-800#292524

Lighter and darker, same hue and chroma

• #2E3847 · oklch(0.338 0.030 256.8) · ΔL +0.06
• #111B28 · oklch(0.218 0.030 256.8) · ΔL −0.06

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