HSL to HEX: #0EA5E9

Also known as: Tailwind v3 sky-500

hsl(198.63 88.66% 48.43%) → #0EA5E9

Values are shown at full precision, so converting back gives exactly #0ea5e9. 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. input
```
H = 198.63°, S = 88.66%, L = 48.43%
```
2. C
```
C = (1 − |2L − 1|) × S = 0.85876
```

3. X

X = C × (1 − |(H / 60°) mod 2 − 1|) = 0.59212   (H / 60° = 3.3105, sector 3)

4. m
```
m = L − C / 2 = 0.05492
```

5. (R′, G′, B′) + m

(R′, G′, B′) = (0.00000, 0.59212, 0.85876)
R = round((0.00000 + 0.05492) × 255) = 14
G = round((0.59212 + 0.05492) × 255) = 165
B = round((0.85876 + 0.05492) × 255) = 233

6. RGB → HEX
```
#0EA5E9
```

All formats

HEX: #0ea5e9
RGB: rgb(14 165 233)
RGB (legacy): rgb(14, 165, 233)
HSL: hsl(198.63 88.66% 48.43%) → hsl(199 89% 48%)
HWB: hwb(199 5% 9%)
OKLCH: oklch(0.685 0.148 237.3) · oklch(68.5% 0.148 237.3)
OKLab: oklab(0.685 -0.080 -0.124)
Lab (D50): lab(63.35 -17.61 -44.86)
LCH (D50): lch(63.35 48.19 248.57)
Display P3: color(display-p3 0.2942 0.6374 0.8908)
Linear sRGB: color(srgb-linear 0.0044 0.3763 0.8148)

Gamut: sRGB and Display P3

#0EA5E9 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.150 and Display P3 reaches 0.197; this color uses 98% of the sRGB chroma available.

CSS snippets

.element {
  color: #0ea5e9;
  color: rgb(14 165 233);
  color: hsl(199 89% 48%);
  color: oklch(0.685 0.148 237.3);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.685 0.148 237.3);
}
/* arbitrary values */
class="text-[#0ea5e9] bg-[oklch(0.685_0.148_237.3)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.2942 0.6374 0.8908); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #0ea5e9 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

#34B8FD · oklch(0.745 0.148 237.3) · ΔL +0.06
#0092D5 · oklch(0.625 0.148 237.3) · 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?