OKLCH 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

   oklch(0.37293 0.03062 259.733)

2. 2. OKLCH → Oklab

   a = C·cos H = -0.00546
   b = C·sin H = -0.03013

3. 3. Oklab → LMS′

   l′ = L + 0.3963·a + 0.2158·b = 0.364265
   m′ = L − 0.1056·a − 0.0639·b = 0.375430
   s′ = L − 0.0895·a − 1.2915·b = 0.412330

4. 4. cube

   l = 0.364265³ = 0.048334
   m = 0.375430³ = 0.052916
   s = 0.412330³ = 0.070103

5. 5. LMS → linear sRGB

   R = 4.0767·l − 3.3077·m + 0.2310·s = 0.038206
   G = −1.2684·l + 2.6098·m − 0.3413·s = 0.052862
   B = −0.0042·l − 0.7034·m + 1.7076·s = 0.082284

6. 6. linear → sRGB, × 255

   R = 0.21569 × 255 = 55.00 → 55
   G = 0.25490 × 255 = 65.00 → 65
   B = 0.31765 × 255 = 81.00 → 81

7. 7. 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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