OKLCH to HEX: #334155

Also known as: Tailwind v3 slate-700

oklch(0.37170 0.03916 257.287) → #334155

Values are shown at full precision, so converting back gives exactly #334155. 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. input
```
oklch(0.37170 0.03916 257.287)
```

2. OKLCH → Oklab

a = C·cos H = -0.00862
b = C·sin H = -0.03820

3. Oklab → LMS′

l′ = L + 0.3963·a + 0.2158·b = 0.360041
m′ = L − 0.1056·a − 0.0639·b = 0.375049
s′ = L − 0.0895·a − 1.2915·b = 0.421806

4. cube

l = 0.360041³ = 0.046672
m = 0.375049³ = 0.052755
s = 0.421806³ = 0.075048

5. LMS → linear sRGB

R = 4.0767·l − 3.3077·m + 0.2310·s = 0.033104
G = −1.2684·l + 2.6098·m − 0.3413·s = 0.052862
B = −0.0042·l − 0.7034·m + 1.7076·s = 0.090848

6. linear → sRGB, × 255

R = 0.20000 × 255 = 51.00 → 51
G = 0.25491 × 255 = 65.00 → 65
B = 0.33334 × 255 = 85.00 → 85

7. RGB → HEX
```
#334155
```

All formats

HEX: #334155
RGB: rgb(51 65 85)
RGB (legacy): rgb(51, 65, 85)
HSL: hsl(215.29 25.00% 26.67%) → hsl(215 25% 27%)
HWB: hwb(215 20% 67%)
OKLCH: oklch(0.372 0.039 257.3) · oklch(37.2% 0.039 257.3)
OKLab: oklab(0.372 -0.009 -0.038)
Lab (D50): lab(26.95 -1.48 -14.02)
LCH (D50): lch(26.95 14.10 263.99)
Display P3: color(display-p3 0.2109 0.2533 0.3266)
Linear sRGB: color(srgb-linear 0.0331 0.0529 0.0908)

Gamut: sRGB and Display P3

#334155 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.133 and Display P3 reaches 0.170; this color uses 29% of the sRGB chroma available.

CSS snippets

.element {
  color: #334155;
  color: rgb(51 65 85);
  color: hsl(215 25% 27%);
  color: oklch(0.372 0.039 257.3);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.372 0.039 257.3);
}
/* arbitrary values */
class="text-[#334155] bg-[oklch(0.372_0.039_257.3)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.2109 0.2533 0.3266); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #334155 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

#435166 · oklch(0.432 0.039 257.3) · ΔL +0.06
#243145 · oklch(0.312 0.039 257.3) · 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?