HEX to OKLCH: #FFA500

Also known as: CSS orange

#FFA500 → oklch(0.793 0.171 70.7)

Values are shown at full precision, so converting back gives exactly #ffa500. 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: 255/255 = 1.00000 → 1.000000  (((x + 0.055) / 1.055)^2.4)
G: 165/255 = 0.64706 → 0.376262  (((x + 0.055) / 1.055)^2.4)
B: 0/255 = 0.00000 → 0.000000  (÷ 12.92)

2. linear sRGB → LMS

l = 0.4122·R + 0.5363·G + 0.0514·B = 0.614023
m = 0.2119·R + 0.6807·G + 0.1074·B = 0.468025
s = 0.0883·R + 0.2817·G + 0.6300·B = 0.194303

3. cube root

l′ = ∛0.614023 = 0.849953
m′ = ∛0.468025 = 0.776407
s′ = ∛0.194303 = 0.579197

4. LMS′ → Oklab

L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.79269
a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = 0.05661
b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = 0.16138

5. Oklab → OKLCH

C = √(a² + b²) = 0.17103
H = atan2(b, a) = 70.670°
L = 0.79269

6. OKLCH

oklch(0.79269 0.17103 70.670)
rounded: oklch(0.793 0.171 70.7)

All formats

HEX: #ffa500
RGB: rgb(255 165 0)
RGB (legacy): rgb(255, 165, 0)
HSL: hsl(38.82 100.00% 50.00%) → hsl(39 100% 50%)
HWB: hwb(39 0% 0%)
OKLCH: oklch(0.793 0.171 70.7) · oklch(79.3% 0.171 70.7)
OKLab: oklab(0.793 0.057 0.161)
Lab (D50): lab(75.59 27.52 79.12)
LCH (D50): lch(75.59 83.77 70.82)
Display P3: color(display-p3 0.9497 0.6629 0.2330)
Linear sRGB: color(srgb-linear 1.0000 0.3763 0.0000)

Gamut: sRGB and Display P3

#FFA500 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.171 and Display P3 reaches 0.196; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #ffa500;
  color: rgb(255 165 0);
  color: hsl(39 100% 50%);
  color: oklch(0.793 0.171 70.7);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.793 0.171 70.7);
}
/* arbitrary values */
class="text-[#ffa500] bg-[oklch(0.793_0.171_70.7)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.9497 0.6629 0.2330); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #ffa500 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

#FFB831 · oklch(0.853 0.171 70.7) · ΔL +0.06
#EA9200 · oklch(0.733 0.171 70.7) · ΔL −0.06

Open in the studio

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