OKLCH to HEX: #008000

Also known as: CSS green

oklch(0.51975 0.17686 142.495) → #008000

Values are shown at full precision, so converting back gives exactly #008000. 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(0.51975 0.17686 142.495)
```

2. OKLCH → Oklab

a = C·cos H = -0.14030
b = C·sin H = 0.10768

3. Oklab → LMS′

l′ = L + 0.3963·a + 0.2158·b = 0.487380
m′ = L − 0.1056·a − 0.0639·b = 0.527685
s′ = L − 0.0895·a − 1.2915·b = 0.393241

4. cube

l = 0.487380³ = 0.115772
m = 0.527685³ = 0.146935
s = 0.393241³ = 0.060810

5. LMS → linear sRGB

R = 4.0767·l − 3.3077·m + 0.2310·s = 0.000000
G = −1.2684·l + 2.6098·m − 0.3413·s = 0.215859
B = −0.0042·l − 0.7034·m + 1.7076·s = -0.000002

6. linear → sRGB, × 255

R = 0.00000 × 255 = 0.00 → 0
G = 0.50196 × 255 = 128.00 → 128
B = 0.00000 × 255 = 0.00 → 0

7. RGB → HEX
```
#008000
```

All formats

HEX: #008000
RGB: rgb(0 128 0)
RGB (legacy): rgb(0, 128, 0)
HSL: hsl(120.00 100.00% 25.10%) → hsl(120 100% 25%)
HWB: hwb(120 0% 50%)
OKLCH: oklch(0.520 0.177 142.5) · oklch(52.0% 0.177 142.5)
OKLab: oklab(0.520 -0.140 0.108)
Lab (D50): lab(46.28 -47.55 48.59)
LCH (D50): lch(46.28 67.98 134.38)
Display P3: color(display-p3 0.2160 0.4942 0.1315)
Linear sRGB: color(srgb-linear 0.0000 0.2159 0.0000)

Gamut: sRGB and Display P3

#008000 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.177 and Display P3 reaches 0.208; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #008000;
  color: rgb(0 128 0);
  color: hsl(120 100% 25%);
  color: oklch(0.520 0.177 142.5);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.520 0.177 142.5);
}
/* arbitrary values */
class="text-[#008000] bg-[oklch(0.520_0.177_142.5)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.2160 0.4942 0.1315); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #008000 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

#259321 · oklch(0.580 0.177 142.5) · ΔL +0.06
#006E00 · oklch(0.460 0.177 142.5) · ΔL −0.06

Open in the studio

Open in the OKLCH picker Check contrast on white

Other converters for this color

All converters →

Guides: What is OKLCH?