HEX to OKLCH: #F59E0B

Also known as: Tailwind v3 amber-500

#F59E0B → oklch(0.769 0.165 70.1)

Values are shown at full precision, so converting back gives exactly #f59e0b. 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: 245/255 = 0.96078 → 0.913099  (((x + 0.055) / 1.055)^2.4)
G: 158/255 = 0.61961 → 0.341914  (((x + 0.055) / 1.055)^2.4)
B: 11/255 = 0.04314 → 0.003347  (((x + 0.055) / 1.055)^2.4)

2. linear sRGB → LMS

l = 0.4122·R + 0.5363·G + 0.0514·B = 0.559951
m = 0.2119·R + 0.6807·G + 0.1074·B = 0.426589
s = 0.0883·R + 0.2817·G + 0.6300·B = 0.179061

3. cube root

l′ = ∛0.559951 = 0.824233
m′ = ∛0.426589 = 0.752783
s′ = ∛0.179061 = 0.563638

4. LMS′ → Oklab

L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.76859
a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = 0.05610
b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = 0.15481

5. Oklab → OKLCH

C = √(a² + b²) = 0.16466
H = atan2(b, a) = 70.080°
L = 0.76859

6. OKLCH

oklch(0.76859 0.16466 70.080)
rounded: oklch(0.769 0.165 70.1)

All formats

HEX: #f59e0b
RGB: rgb(245 158 11)
RGB (legacy): rgb(245, 158, 11)
HSL: hsl(37.69 92.13% 50.20%) → hsl(38 92% 50%)
HWB: hwb(38 4% 4%)
OKLCH: oklch(0.769 0.165 70.1) · oklch(76.9% 0.165 70.1)
OKLab: oklab(0.769 0.056 0.155)
Lab (D50): lab(72.79 26.93 75.43)
LCH (D50): lch(72.79 80.10 70.35)
Display P3: color(display-p3 0.9122 0.6349 0.2305)
Linear sRGB: color(srgb-linear 0.9131 0.3419 0.0033)

Gamut: sRGB and Display P3

#F59E0B is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.166 and Display P3 reaches 0.191; this color uses 99% of the sRGB chroma available.

CSS snippets

.element {
  color: #f59e0b;
  color: rgb(245 158 11);
  color: hsl(38 92% 50%);
  color: oklch(0.769 0.165 70.1);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.769 0.165 70.1);
}
/* arbitrary values */
class="text-[#f59e0b] bg-[oklch(0.769_0.165_70.1)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.9122 0.6349 0.2305); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #f59e0b 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

#FFB133 · oklch(0.829 0.165 70.1) · ΔL +0.06
#E18B00 · oklch(0.709 0.165 70.1) · ΔL −0.06

Open in the studio

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Guides: What is OKLCH?