HEX to HSL: #FFB900

Also known as: Tailwind amber-400

#FFB900 → hsl(44 100% 50%)

Values are shown at full precision, so converting back gives exactly #ffb900. 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 = 0.7255
B = 0.0000
```

2. max, min, Δ

max = 1.0000
min = 0.0000
Δ = max − min = 1.0000

3. L
```
L = (max + min) / 2 = 0.5000 = 50.00%
```

4. S

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

5. H

max is R → H = 60° × (((G − B) / Δ) mod 6) = 60° × (((0.7255 − 0.0000) / 1.0000) mod 6) = 43.53°

6. HSL
```
hsl(43.53 100.00% 50.00%)
```

All formats

HEX: #ffb900
RGB: rgb(255 185 0)
RGB (legacy): rgb(255, 185, 0)
HSL: hsl(43.53 100.00% 50.00%) → hsl(44 100% 50%)
HWB: hwb(44 0% 0%)
OKLCH: oklch(0.829 0.171 81.0) · oklch(82.9% 0.171 81.0)
OKLab: oklab(0.829 0.027 0.169)
Lab (D50): lab(80.20 17.59 81.90)
LCH (D50): lch(80.20 83.77 77.88)
Display P3: color(display-p3 0.9587 0.7368 0.2533)
Linear sRGB: color(srgb-linear 1.0000 0.4851 0.0000)

Gamut: sRGB and Display P3

#FFB900 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 0.197; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #ffb900;
  color: rgb(255 185 0);
  color: hsl(44 100% 50%);
  color: oklch(0.829 0.171 81.0);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.829 0.171 81.0);
}
/* arbitrary values */
class="text-[#ffb900] bg-[oklch(0.829_0.171_81.0)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.9587 0.7368 0.2533); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #ffb900 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

#FFCD34 · oklch(0.889 0.171 81.0) · ΔL +0.06
#EBA600 · oklch(0.769 0.171 81.0) · ΔL −0.06

Open in the studio

Open in the OKLCH picker Check contrast on white

Other converters for this color

All converters →

Guides: What is OKLCH?