HEX to HSL: #20B2AA

Also known as: CSS lightseagreen

#20B2AA → hsl(177 70% 41%)

Values are shown at full precision, so converting back gives exactly #20b2aa. 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 = 0.1255
G = 0.6980
B = 0.6667
```

2. max, min, Δ

max = 0.6980
min = 0.1255
Δ = max − min = 0.5725

3. L
```
L = (max + min) / 2 = 0.4118 = 41.18%
```

4. S

S = Δ / (1 − |2L − 1|) = 0.6952 = 69.52%

5. H

max is G → H = 60° × ((B − R) / Δ + 2) = 60° × ((0.6667 − 0.1255) / 0.5725 + 2) = 176.71°

6. HSL
```
hsl(176.71 69.52% 41.18%)
```

All formats

HEX: #20b2aa
RGB: rgb(32 178 170)
RGB (legacy): rgb(32, 178, 170)
HSL: hsl(176.71 69.52% 41.18%) → hsl(177 70% 41%)
HWB: hwb(177 13% 30%)
OKLCH: oklch(0.691 0.114 189.0) · oklch(69.1% 0.114 189.0)
OKLab: oklab(0.691 -0.113 -0.018)
Lab (D50): lab(65.49 -38.83 -6.92)
LCH (D50): lch(65.49 39.44 190.10)
Display P3: color(display-p3 0.3335 0.6879 0.6640)
Linear sRGB: color(srgb-linear 0.0144 0.4452 0.4020)

Gamut: sRGB and Display P3

#20B2AA is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.120 and Display P3 reaches 0.161; this color uses 95% of the sRGB chroma available.

CSS snippets

.element {
  color: #20b2aa;
  color: rgb(32 178 170);
  color: hsl(177 70% 41%);
  color: oklch(0.691 0.114 189.0);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.691 0.114 189.0);
}
/* arbitrary values */
class="text-[#20b2aa] bg-[oklch(0.691_0.114_189.0)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.3335 0.6879 0.6640); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #20b2aa 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

#3FC5BD · oklch(0.751 0.114 189.0) · ΔL +0.06
#009F97 · oklch(0.631 0.114 189.0) · 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?