HEX to OKLCH: #FCD34D

Result

Values are shown at full precision, so converting back gives exactly #fcd34d. 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: 252/255 = 0.98824 → 0.973445  (((x + 0.055) / 1.055)^2.4)
   G: 211/255 = 0.82745 → 0.651406  (((x + 0.055) / 1.055)^2.4)
   B: 77/255 = 0.30196 → 0.074214  (((x + 0.055) / 1.055)^2.4)

2. 2. linear sRGB → LMS

   l = 0.4122·R + 0.5363·G + 0.0514·B = 0.754463
   m = 0.2119·R + 0.6807·G + 0.1074·B = 0.657658
   s = 0.0883·R + 0.2817·G + 0.6300·B = 0.316224

3. 3. cube root

   l′ = ∛0.754463 = 0.910359
   m′ = ∛0.657658 = 0.869628
   s′ = ∛0.316224 = 0.681289

4. 4. LMS′ → Oklab

   L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.87897
   a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = -0.00430
   b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = 0.15336

5. 5. Oklab → OKLCH

   C = √(a² + b²) = 0.15342
   H = atan2(b, a) = 91.605°
   L = 0.87897

6. 6. OKLCH

   oklch(0.87897 0.15342 91.605)
   rounded: oklch(0.879 0.153 91.6)

All formats

HEX

#fcd34d

RGB

rgb(252 211 77)

RGB (legacy)

rgb(252, 211, 77)

HSL

hsl(45.94 96.69% 64.51%) → hsl(46 97% 65%)

HWB

hwb(46 30% 1%)

OKLCH

oklch(0.879 0.153 91.6) · oklch(87.9% 0.153 91.6)

OKLab

oklab(0.879 -0.004 0.153)

Lab (D50)

lab(86.41 4.93 68.60)

LCH (D50)

lch(86.41 68.78 85.89)

Display P3

color(display-p3 0.9623 0.8335 0.3978)

Linear sRGB

color(srgb-linear 0.9734 0.6514 0.0742)

Gamut: sRGB and Display P3

#FCD34D is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.166 and Display P3 reaches 0.202; this color uses 92% of the sRGB chroma available.

CSS snippets

.element {
  color: #fcd34d;
  color: rgb(252 211 77);
  color: hsl(46 97% 65%);
  color: oklch(0.879 0.153 91.6);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.879 0.153 91.6);
}
/* arbitrary values */
class="text-[#fcd34d] bg-[oklch(0.879_0.153_91.6)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.9623 0.8335 0.3978); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #fcd34d calc(l - 0.1) c h); }

Nearby colors

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

• amber-300#FFD230
• v3 yellow-400#FACC15
• gold#FFD700
• yellow-400#FDC700
• v3 yellow-300#FDE047
• yellow-300#FFDF20
• v3 amber-400#FBBF24
• amber-200#FEE685

Lighter and darker, same hue and chroma

• #FFE764 · oklch(0.939 0.153 91.6) · ΔL +0.06
• #E8BF33 · oklch(0.819 0.153 91.6) · ΔL −0.06

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