HEX to OKLCH: #ADFF2F

Also known as: CSS greenyellow

#ADFF2F → oklch(0.913 0.233 130.0)

Values are shown at full precision, so converting back gives exactly #adff2f. 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: 173/255 = 0.67843 → 0.417885  (((x + 0.055) / 1.055)^2.4)
G: 255/255 = 1.00000 → 1.000000  (((x + 0.055) / 1.055)^2.4)
B: 47/255 = 0.18431 → 0.028426  (((x + 0.055) / 1.055)^2.4)

2. linear sRGB → LMS

l = 0.4122·R + 0.5363·G + 0.0514·B = 0.710056
m = 0.2119·R + 0.6807·G + 0.1074·B = 0.772304
s = 0.0883·R + 0.2817·G + 0.6300·B = 0.336527

3. cube root

l′ = ∛0.710056 = 0.892136
m′ = ∛0.772304 = 0.917479
s′ = ∛0.336527 = 0.695569

4. LMS′ → Oklab

L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.91305
a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = -0.15012
b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = 0.17880

5. Oklab → OKLCH

C = √(a² + b²) = 0.23346
H = atan2(b, a) = 130.017°
L = 0.91305

6. OKLCH

oklch(0.91305 0.23346 130.017)
rounded: oklch(0.913 0.233 130.0)

All formats

HEX: #adff2f
RGB: rgb(173 255 47)
RGB (legacy): rgb(173, 255, 47)
HSL: hsl(83.65 100.00% 59.22%) → hsl(84 100% 59%)
HWB: hwb(84 18% 0%)
OKLCH: oklch(0.913 0.233 130.0) · oklch(91.3% 0.233 130.0)
OKLab: oklab(0.913 -0.150 0.179)
Lab (D50): lab(92.20 -46.41 80.45)
LCH (D50): lch(92.20 92.88 119.98)
Display P3: color(display-p3 0.7492 0.9915 0.3582)
Linear sRGB: color(srgb-linear 0.4179 1.0000 0.0284)

Gamut: sRGB and Display P3

#ADFF2F is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.233 and Display P3 reaches 0.259; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #adff2f;
  color: rgb(173 255 47);
  color: hsl(84 100% 59%);
  color: oklch(0.913 0.233 130.0);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.913 0.233 130.0);
}
/* arbitrary values */
class="text-[#adff2f] bg-[oklch(0.913_0.233_130.0)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.7492 0.9915 0.3582); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #adff2f 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

#C0FF4E · oklch(0.973 0.233 130.0) · ΔL +0.06
#9AEB00 · oklch(0.853 0.233 130.0) · ΔL −0.06

Open in the studio

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