HEX to HSL: #FFDF20

Also known as: Tailwind yellow-300

#FFDF20 → hsl(51 100% 56%)

Values are shown at full precision, so converting back gives exactly #ffdf20. 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 = 0.8745
B = 0.1255
```

2. max, min, Δ

max = 1.0000
min = 0.1255
Δ = max − min = 0.8745

3. L
```
L = (max + min) / 2 = 0.5627 = 56.27%
```

4. S

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

5. H

max is R → H = 60° × (((G − B) / Δ) mod 6) = 60° × (((0.8745 − 0.1255) / 0.8745) mod 6) = 51.39°

6. HSL
```
hsl(51.39 100.00% 56.27%)
```

All formats

HEX: #ffdf20
RGB: rgb(255 223 32)
RGB (legacy): rgb(255, 223, 32)
HSL: hsl(51.39 100.00% 56.27%) → hsl(51 100% 56%)
HWB: hwb(51 13% 0%)
OKLCH: oklch(0.903 0.182 98.3) · oklch(90.3% 0.182 98.3)
OKLab: oklab(0.903 -0.026 0.180)
Lab (D50): lab(89.50 -0.66 84.31)
LCH (D50): lch(89.50 84.31 90.45)
Display P3: color(display-p3 0.9793 0.8791 0.3202)
Linear sRGB: color(srgb-linear 1.0000 0.7379 0.0144)

Gamut: sRGB and Display P3

#FFDF20 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.182 and Display P3 reaches 0.216; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #ffdf20;
  color: rgb(255 223 32);
  color: hsl(51 100% 56%);
  color: oklch(0.903 0.182 98.3);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.903 0.182 98.3);
}
/* arbitrary values */
class="text-[#ffdf20] bg-[oklch(0.903_0.182_98.3)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.9793 0.8791 0.3202); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #ffdf20 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

#FFF344 · oklch(0.963 0.182 98.3) · ΔL +0.06
#EBCB00 · oklch(0.843 0.182 98.3) · 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?