HEX to HSL: #FF8904

Also known as: Tailwind orange-400

#FF8904 → hsl(32 100% 51%)

Values are shown at full precision, so converting back gives exactly #ff8904. 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. RGB ÷ 255
```
R = 1.0000
G = 0.5373
B = 0.0157
```

2. max, min, Δ

max = 1.0000
min = 0.0157
Δ = max − min = 0.9843

3. L
```
L = (max + min) / 2 = 0.5078 = 50.78%
```

4. S

S = Δ / (1 − |2L − 1|) = 1.0000 = 100.00%

5. H

max is R → H = 60° × (((G − B) / Δ) mod 6) = 60° × (((0.5373 − 0.0157) / 0.9843) mod 6) = 31.79°

6. HSL
```
hsl(31.79 100.00% 50.78%)
```

All formats

HEX: #ff8904
RGB: rgb(255 137 4)
RGB (legacy): rgb(255, 137, 4)
HSL: hsl(31.79 100.00% 50.78%) → hsl(32 100% 51%)
HWB: hwb(32 2% 0%)
OKLCH: oklch(0.746 0.180 56.7) · oklch(74.6% 0.180 56.7)
OKLab: oklab(0.746 0.099 0.151)
Lab (D50): lab(69.60 41.25 75.23)
LCH (D50): lch(69.60 85.80 61.27)
Display P3: color(display-p3 0.9390 0.5611 0.2100)
Linear sRGB: color(srgb-linear 1.0000 0.2502 0.0012)

Gamut: sRGB and Display P3

#FF8904 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.180 and Display P3 reaches 0.207; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #ff8904;
  color: rgb(255 137 4);
  color: hsl(32 100% 51%);
  color: oklch(0.746 0.180 56.7);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.746 0.180 56.7);
}
/* arbitrary values */
class="text-[#ff8904] bg-[oklch(0.746_0.180_56.7)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.9390 0.5611 0.2100); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #ff8904 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

#FF9C30 · oklch(0.806 0.180 56.7) · ΔL +0.06
#EA7600 · oklch(0.686 0.180 56.7) · ΔL −0.06

Open in the studio

Open in the OKLCH picker Check contrast on white

Other converters for this color

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Guides: What is OKLCH?