HEX to HSL: #FDC700

Also known as: Tailwind yellow-400

#FDC700 → hsl(47 100% 50%)

Values are shown at full precision, so converting back gives exactly #fdc700. 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 = 0.9922
G = 0.7804
B = 0.0000
```

2. max, min, Δ

max = 0.9922
min = 0.0000
Δ = max − min = 0.9922

3. L
```
L = (max + min) / 2 = 0.4961 = 49.61%
```

4. S

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

5. H

max is R → H = 60° × (((G − B) / Δ) mod 6) = 60° × (((0.7804 − 0.0000) / 0.9922) mod 6) = 47.19°

6. HSL
```
hsl(47.19 100.00% 49.61%)
```

All formats

HEX: #fdc700
RGB: rgb(253 199 0)
RGB (legacy): rgb(253, 199, 0)
HSL: hsl(47.19 100.00% 49.61%) → hsl(47 100% 50%)
HWB: hwb(47 0% 1%)
OKLCH: oklch(0.854 0.174 88.8) · oklch(85.4% 0.174 88.8)
OKLab: oklab(0.854 0.004 0.174)
Lab (D50): lab(83.34 9.85 83.76)
LCH (D50): lch(83.34 84.33 83.30)
Display P3: color(display-p3 0.9590 0.7887 0.2674)
Linear sRGB: color(srgb-linear 0.9823 0.5711 0.0000)

Gamut: sRGB and Display P3

#FDC700 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.174 and Display P3 reaches 0.201; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #fdc700;
  color: rgb(253 199 0);
  color: hsl(47 100% 50%);
  color: oklch(0.854 0.174 88.8);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.854 0.174 88.8);
}
/* arbitrary values */
class="text-[#fdc700] bg-[oklch(0.854_0.174_88.8)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.9590 0.7887 0.2674); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #fdc700 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

#FFDB35 · oklch(0.914 0.174 88.8) · ΔL +0.06
#E9B300 · oklch(0.794 0.174 88.8) · 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?