HEX to OKLCH: #10B981

Also known as: Tailwind v3 emerald-500

#10B981 → oklch(0.696 0.149 162.5)

Values are shown at full precision, so converting back gives exactly #10b981. 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. sRGB → linear

R: 16/255 = 0.06275 → 0.005182  (((x + 0.055) / 1.055)^2.4)
G: 185/255 = 0.72549 → 0.485150  (((x + 0.055) / 1.055)^2.4)
B: 129/255 = 0.50588 → 0.219526  (((x + 0.055) / 1.055)^2.4)

2. linear sRGB → LMS

l = 0.4122·R + 0.5363·G + 0.0514·B = 0.273631
m = 0.2119·R + 0.6807·G + 0.1074·B = 0.354916
s = 0.0883·R + 0.2817·G + 0.6300·B = 0.275430

3. cube root

l′ = ∛0.273631 = 0.649215
m′ = ∛0.354916 = 0.708014
s′ = ∛0.275430 = 0.650635

4. LMS′ → Oklab

L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.69587
a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = -0.14216
b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = 0.04488

5. Oklab → OKLCH

C = √(a² + b²) = 0.14907
H = atan2(b, a) = 162.480°
L = 0.69587

6. OKLCH

oklch(0.69587 0.14907 162.480)
rounded: oklch(0.696 0.149 162.5)

All formats

HEX: #10b981
RGB: rgb(16 185 129)
RGB (legacy): rgb(16, 185, 129)
HSL: hsl(160.12 84.08% 39.41%) → hsl(160 84% 39%)
HWB: hwb(160 6% 27%)
OKLCH: oklch(0.696 0.149 162.5) · oklch(69.6% 0.149 162.5)
OKLab: oklab(0.696 -0.142 0.045)
Lab (D50): lab(66.69 -50.67 17.06)
LCH (D50): lch(66.69 53.46 161.39)
Display P3: color(display-p3 0.3325 0.7147 0.5221)
Linear sRGB: color(srgb-linear 0.0052 0.4851 0.2195)

Gamut: sRGB and Display P3

#10B981 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.152 and Display P3 reaches 0.208; this color uses 98% of the sRGB chroma available.

CSS snippets

.element {
  color: #10b981;
  color: rgb(16 185 129);
  color: hsl(160 84% 39%);
  color: oklch(0.696 0.149 162.5);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.696 0.149 162.5);
}
/* arbitrary values */
class="text-[#10b981] bg-[oklch(0.696_0.149_162.5)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.3325 0.7147 0.5221); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #10b981 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

#37CD93 · oklch(0.756 0.149 162.5) · ΔL +0.06
#00A66F · oklch(0.636 0.149 162.5) · ΔL −0.06

Open in the studio

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