HEX to HSL: #FF637E

Also known as: Tailwind rose-400

#FF637E → hsl(350 100% 69%)

Values are shown at full precision, so converting back gives exactly #ff637e. 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 = 0.3882
B = 0.4941
```

2. max, min, Δ

max = 1.0000
min = 0.3882
Δ = max − min = 0.6118

3. L
```
L = (max + min) / 2 = 0.6941 = 69.41%
```

4. S

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

5. H

max is R → H = 60° × (((G − B) / Δ) mod 6) = 60° × (((0.3882 − 0.4941) / 0.6118) mod 6) = 349.62°

6. HSL
```
hsl(349.62 100.00% 69.41%)
```

All formats

HEX: #ff637e
RGB: rgb(255 99 126)
RGB (legacy): rgb(255, 99, 126)
HSL: hsl(349.62 100.00% 69.41%) → hsl(350 100% 69%)
HWB: hwb(350 39% 0%)
OKLCH: oklch(0.706 0.190 13.0) · oklch(70.6% 0.190 13.0)
OKLab: oklab(0.706 0.185 0.043)
Lab (D50): lab(63.72 61.77 18.17)
LCH (D50): lch(63.72 64.39 16.39)
Display P3: color(display-p3 0.9283 0.4286 0.5022)
Linear sRGB: color(srgb-linear 1.0000 0.1248 0.2086)

Gamut: sRGB and Display P3

#FF637E is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.190 and Display P3 reaches 0.243; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #ff637e;
  color: rgb(255 99 126);
  color: hsl(350 100% 69%);
  color: oklch(0.706 0.190 13.0);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.706 0.190 13.0);
}
/* arbitrary values */
class="text-[#ff637e] bg-[oklch(0.706_0.190_13.0)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.9283 0.4286 0.5022); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #ff637e 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

#FF7790 · oklch(0.766 0.190 13.0) · ΔL +0.06
#E94F6C · oklch(0.646 0.190 13.0) · 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?