OKLCH to HEX: #3F3F46

Result

Values are shown at full precision, so converting back gives exactly #3f3f46. 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(0.37032 0.01188 285.805)

2. 2. OKLCH → Oklab

   a = C·cos H = 0.00324
   b = C·sin H = -0.01143

3. 3. Oklab → LMS′

   l′ = L + 0.3963·a + 0.2158·b = 0.369136
   m′ = L − 0.1056·a − 0.0639·b = 0.370708
   s′ = L − 0.0895·a − 1.2915·b = 0.384793

4. 4. cube

   l = 0.369136³ = 0.050299
   m = 0.370708³ = 0.050944
   s = 0.384793³ = 0.056975

5. 5. LMS → linear sRGB

   R = 4.0767·l − 3.3077·m + 0.2310·s = 0.049705
   G = −1.2684·l + 2.6098·m − 0.3413·s = 0.049705
   B = −0.0042·l − 0.7034·m + 1.7076·s = 0.061245

6. 6. linear → sRGB, × 255

   R = 0.24706 × 255 = 63.00 → 63
   G = 0.24706 × 255 = 63.00 → 63
   B = 0.27451 × 255 = 70.00 → 70

7. 7. RGB → HEX

   #3F3F46

All formats

HEX

#3f3f46

RGB

rgb(63 63 70)

RGB (legacy)

rgb(63, 63, 70)

HSL

hsl(240.00 5.26% 26.08%) → hsl(240 5% 26%)

HWB

hwb(240 25% 73%)

OKLCH

oklch(0.370 0.012 285.8) · oklch(37.0% 0.012 285.8)

OKLab

oklab(0.370 0.003 -0.011)

Lab (D50)

lab(26.85 1.23 -4.28)

LCH (D50)

lch(26.85 4.46 286.00)

Display P3

color(display-p3 0.2471 0.2471 0.2722)

Linear sRGB

color(srgb-linear 0.0497 0.0497 0.0612)

Gamut: sRGB and Display P3

#3F3F46 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.215 and Display P3 reaches 0.220; this color uses 6% of the sRGB chroma available.

CSS snippets

.element {
  color: #3f3f46;
  color: rgb(63 63 70);
  color: hsl(240 5% 26%);
  color: oklch(0.370 0.012 285.8);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.370 0.012 285.8);
}
/* arbitrary values */
class="text-[#3f3f46] bg-[oklch(0.370_0.012_285.8)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.2471 0.2471 0.2722); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #3f3f46 calc(l - 0.1) c h); }

Nearby colors

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

• neutral-700#404040
• mist-700#394447
• v3 stone-700#44403C
• v3 gray-700#374151
• stone-700#44403B
• mauve-700#463947
• taupe-700#473C39
• gray-700#364153

Lighter and darker, same hue and chroma

• #4F4F56 · oklch(0.430 0.012 285.8) · ΔL +0.06
• #303036 · oklch(0.310 0.012 285.8) · ΔL −0.06

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