HSL to HEX: #374151

Result

Values are shown at full precision, so converting back gives exactly #374151. 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 = 216.92°, S = 19.12%, L = 26.67%

2. 2. C

   C = (1 − |2L − 1|) × S = 0.10199

3. 3. X

   X = C × (1 − |(H / 60°) mod 2 − 1|) = 0.03923   (H / 60° = 3.6153, sector 3)

4. 4. m

   m = L − C / 2 = 0.21571

5. 5. (R′, G′, B′) + m

   (R′, G′, B′) = (0.00000, 0.03923, 0.10199)
   R = round((0.00000 + 0.21571) × 255) = 55
   G = round((0.03923 + 0.21571) × 255) = 65
   B = round((0.10199 + 0.21571) × 255) = 81

6. 6. RGB → HEX

   #374151

All formats

HEX

#374151

RGB

rgb(55 65 81)

RGB (legacy)

rgb(55, 65, 81)

HSL

hsl(216.92 19.12% 26.67%) → hsl(217 19% 27%)

HWB

hwb(217 22% 68%)

OKLCH

oklch(0.373 0.031 259.7) · oklch(37.3% 0.031 259.7)

OKLab

oklab(0.373 -0.005 -0.030)

Lab (D50)

lab(27.13 -0.95 -11.13)

LCH (D50)

lch(27.13 11.17 265.11)

Display P3

color(display-p3 0.2232 0.2537 0.3122)

Linear sRGB

color(srgb-linear 0.0382 0.0529 0.0823)

Gamut: sRGB and Display P3

#374151 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.150 and Display P3 reaches 0.189; this color uses 20% of the sRGB chroma available.

CSS snippets

.element {
  color: #374151;
  color: rgb(55 65 81);
  color: hsl(217 19% 27%);
  color: oklch(0.373 0.031 259.7);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.373 0.031 259.7);
}
/* arbitrary values */
class="text-[#374151] bg-[oklch(0.373_0.031_259.7)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.2232 0.2537 0.3122); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #374151 calc(l - 0.1) c h); }

Nearby colors

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

• gray-700#364153
• v3 slate-700#334155
• slate-700#314158
• zinc-700#3F3F46
• mist-700#394447
• neutral-700#404040
• mauve-700#463947
• v3 stone-700#44403C

Lighter and darker, same hue and chroma

• #475162 · oklch(0.433 0.031 259.7) · ΔL +0.06
• #283141 · oklch(0.313 0.031 259.7) · ΔL −0.06

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