OKLCH to HEX: #F0F9FF

Also known as: Tailwind sky-50, Tailwind v3 sky-50

oklch(0.97711 0.01249 236.620) → #F0F9FF

Values are shown at full precision, so converting back gives exactly #f0f9ff. 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
```
oklch(0.97711 0.01249 236.620)
```

2. OKLCH → Oklab

a = C·cos H = -0.00687
b = C·sin H = -0.01043

3. Oklab → LMS′

l′ = L + 0.3963·a + 0.2158·b = 0.972136
m′ = L − 0.1056·a − 0.0639·b = 0.978501
s′ = L − 0.0895·a − 1.2915·b = 0.991195

4. cube

l = 0.972136³ = 0.918715
m = 0.978501³ = 0.936881
s = 0.991195³ = 0.973816

5. LMS → linear sRGB

R = 4.0767·l − 3.3077·m + 0.2310·s = 0.871353
G = −1.2684·l + 2.6098·m − 0.3413·s = 0.947317
B = −0.0042·l − 0.7034·m + 1.7076·s = 1.000028

6. linear → sRGB, × 255

R = 0.94117 × 255 = 240.00 → 240
G = 0.97648 × 255 = 249.00 → 249
B = 1.00000 × 255 = 255.00 → 255

7. RGB → HEX
```
#F0F9FF
```

All formats

HEX: #f0f9ff
RGB: rgb(240 249 255)
RGB (legacy): rgb(240, 249, 255)
HSL: hsl(204.00 100.00% 97.06%) → hsl(204 100% 97%)
HWB: hwb(204 94% 0%)
OKLCH: oklch(0.977 0.012 236.6) · oklch(97.7% 0.012 236.6)
OKLab: oklab(0.977 -0.007 -0.010)
Lab (D50): lab(97.37 -2.25 -3.97)
LCH (D50): lch(97.37 4.56 240.48)
Display P3: color(display-p3 0.9476 0.9753 0.9974)
Linear sRGB: color(srgb-linear 0.8714 0.9473 1.0000)

Gamut: sRGB and Display P3

#F0F9FF is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.012 and Display P3 reaches 0.014; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #f0f9ff;
  color: rgb(240 249 255);
  color: hsl(204 100% 97%);
  color: oklch(0.977 0.012 236.6);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.977 0.012 236.6);
}
/* arbitrary values */
class="text-[#f0f9ff] bg-[oklch(0.977_0.012_236.6)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.9476 0.9753 0.9974); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #f0f9ff 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

#F8FFFF · oklch(1.000 0.012 236.6) · ΔL +0.06
#DCE5EB · oklch(0.917 0.012 236.6) · 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?