HEX to OKLCH: #F9FAFB

Result

Values are shown at full precision, so converting back gives exactly #f9fafb. 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: 249/255 = 0.97647 → 0.947307  (((x + 0.055) / 1.055)^2.4)
   G: 250/255 = 0.98039 → 0.955973  (((x + 0.055) / 1.055)^2.4)
   B: 251/255 = 0.98431 → 0.964686  (((x + 0.055) / 1.055)^2.4)

2. 2. linear sRGB → LMS

   l = 0.4122·R + 0.5363·G + 0.0514·B = 0.952849
   m = 0.2119·R + 0.6807·G + 0.1074·B = 0.955073
   s = 0.0883·R + 0.2817·G + 0.6300·B = 0.960697

3. 3. cube root

   l′ = ∛0.952849 = 0.984029
   m′ = ∛0.955073 = 0.984794
   s′ = ∛0.960697 = 0.986724

4. 4. LMS′ → Oklab

   L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.98463
   a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = -0.00064
   b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = -0.00158

5. 5. Oklab → OKLCH

   C = √(a² + b²) = 0.00171
   H = atan2(b, a) = 247.839°
   L = 0.98463

6. 6. OKLCH

   oklch(0.98463 0.00171 247.839)
   rounded: oklch(0.985 0.002 247.8)

All formats

HEX

#f9fafb

RGB

rgb(249 250 251)

RGB (legacy)

rgb(249, 250, 251)

HSL

hsl(210.00 20.00% 98.04%) → hsl(210 20% 98%)

HWB

hwb(210 98% 2%)

OKLCH

oklch(0.985 0.002 247.8) · oklch(98.5% 0.002 247.8)

OKLab

oklab(0.985 -0.001 -0.002)

Lab (D50)

lab(98.22 -0.21 -0.60)

LCH (D50)

lch(98.22 0.64 250.72)

Display P3

color(display-p3 0.9772 0.9803 0.9839)

Linear sRGB

color(srgb-linear 0.9473 0.9560 0.9647)

Gamut: sRGB and Display P3

#F9FAFB is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.008 and Display P3 reaches 0.008; this color uses 22% of the sRGB chroma available.

CSS snippets

.element {
  color: #f9fafb;
  color: rgb(249 250 251);
  color: hsl(210 20% 98%);
  color: oklch(0.985 0.002 247.8);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.985 0.002 247.8);
}
/* arbitrary values */
class="text-[#f9fafb] bg-[oklch(0.985_0.002_247.8)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.9772 0.9803 0.9839); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #f9fafb calc(l - 0.1) c h); }

Nearby colors

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

• slate-50#F8FAFC
• mauve-50#FAFAFA
• mist-50#F9FBFB
• stone-50#FAFAF9
• taupe-50#FBFAF9
• olive-50#FBFBF9
• snow#FFFAFA
• ghostwhite#F8F8FF

Lighter and darker, same hue and chroma

• #FEFFFF · oklch(1.000 0.002 247.8) · ΔL +0.06
• #E5E6E7 · oklch(0.925 0.002 247.8) · ΔL −0.06

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