HEX to OKLCH: #F0F8FF

Result

Values are shown at full precision, so converting back gives exactly #f0f8ff. 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. 1. sRGB → linear

   R: 240/255 = 0.94118 → 0.871367  (((x + 0.055) / 1.055)^2.4)
   G: 248/255 = 0.97255 → 0.938686  (((x + 0.055) / 1.055)^2.4)
   B: 255/255 = 1.00000 → 1.000000  (((x + 0.055) / 1.055)^2.4)

2. 2. linear sRGB → LMS

   l = 0.4122·R + 0.5363·G + 0.0514·B = 0.914090
   m = 0.2119·R + 0.6807·G + 0.1074·B = 0.931006
   s = 0.0883·R + 0.2817·G + 0.6300·B = 0.971368

3. 3. cube root

   l′ = ∛0.914090 = 0.970502
   m′ = ∛0.931006 = 0.976452
   s′ = ∛0.971368 = 0.990363

4. 4. LMS′ → Oklab

   L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.97514
   a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = -0.00550
   b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = -0.01140

5. 5. Oklab → OKLCH

   C = √(a² + b²) = 0.01266
   H = atan2(b, a) = 244.251°
   L = 0.97514

6. 6. OKLCH

   oklch(0.97514 0.01266 244.251)
   rounded: oklch(0.975 0.013 244.3)

All formats

HEX

#f0f8ff

RGB

rgb(240 248 255)

RGB (legacy)

rgb(240, 248, 255)

HSL

hsl(208.00 100.00% 97.06%) → hsl(208 100% 97%)

HWB

hwb(208 94% 0%)

OKLCH

oklch(0.975 0.013 244.3) · oklch(97.5% 0.013 244.3)

OKLab

oklab(0.975 -0.006 -0.011)

Lab (D50)

lab(97.12 -1.77 -4.33)

LCH (D50)

lch(97.12 4.68 247.74)

Display P3

color(display-p3 0.9468 0.9715 0.9971)

Linear sRGB

color(srgb-linear 0.8714 0.9387 1.0000)

Gamut: sRGB and Display P3

#F0F8FF is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.013 and Display P3 reaches 0.014; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #f0f8ff;
  color: rgb(240 248 255);
  color: hsl(208 100% 97%);
  color: oklch(0.975 0.013 244.3);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.975 0.013 244.3);
}
/* arbitrary values */
class="text-[#f0f8ff] bg-[oklch(0.975_0.013_244.3)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.9468 0.9715 0.9971); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #f0f8ff calc(l - 0.1) c h); }

Nearby colors

Closest colors in the Tailwind and CSS named palettes (OKLab distance).

• sky-50#F0F9FF
• blue-50#EFF6FF
• slate-100#F1F5F9
• ghostwhite#F8F8FF
• slate-50#F8FAFC
• gray-100#F3F4F6
• neutral-100#F5F5F5
• violet-50#F5F3FF

Lighter and darker, same hue and chroma

• #F8FFFF · oklch(1.000 0.013 244.3) · ΔL +0.06
• #DCE4EB · oklch(0.915 0.013 244.3) · ΔL −0.06

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