HEX to OKLCH: #FFD230

Result

Values are shown at full precision, so converting back gives exactly #ffd230. 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: 255/255 = 1.00000 → 1.000000  (((x + 0.055) / 1.055)^2.4)
   G: 210/255 = 0.82353 → 0.644480  (((x + 0.055) / 1.055)^2.4)
   B: 48/255 = 0.18824 → 0.029557  (((x + 0.055) / 1.055)^2.4)

2. 2. linear sRGB → LMS

   l = 0.4122·R + 0.5363·G + 0.0514·B = 0.759397
   m = 0.2119·R + 0.6807·G + 0.1074·B = 0.653775
   s = 0.0883·R + 0.2817·G + 0.6300·B = 0.288485

3. 3. cube root

   l′ = ∛0.759397 = 0.912339
   m′ = ∛0.653775 = 0.867913
   s′ = ∛0.288485 = 0.660756

4. 4. LMS′ → Oklab

   L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.87811
   a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = -0.00547
   b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = 0.16867

5. 5. Oklab → OKLCH

   C = √(a² + b²) = 0.16876
   H = atan2(b, a) = 91.857°
   L = 0.87811

6. 6. OKLCH

   oklch(0.87811 0.16876 91.857)
   rounded: oklch(0.878 0.169 91.9)

All formats

HEX

#ffd230

RGB

rgb(255 210 48)

RGB (legacy)

rgb(255, 210, 48)

HSL

hsl(46.96 100.00% 59.41%) → hsl(47 100% 59%)

HWB

hwb(47 19% 0%)

OKLCH

oklch(0.878 0.169 91.9) · oklch(87.8% 0.169 91.9)

OKLab

oklab(0.878 -0.005 0.169)

Lab (D50)

lab(86.32 5.86 78.24)

LCH (D50)

lch(86.32 78.46 85.72)

Display P3

color(display-p3 0.9717 0.8302 0.3330)

Linear sRGB

color(srgb-linear 1.0000 0.6445 0.0296)

Gamut: sRGB and Display P3

#FFD230 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.169 and Display P3 reaches 0.206; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #ffd230;
  color: rgb(255 210 48);
  color: hsl(47 100% 59%);
  color: oklch(0.878 0.169 91.9);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.878 0.169 91.9);
}
/* arbitrary values */
class="text-[#ffd230] bg-[oklch(0.878_0.169_91.9)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.9717 0.8302 0.3330); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #ffd230 calc(l - 0.1) c h); }

Nearby colors

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

• v3 amber-300#FCD34D
• v3 yellow-400#FACC15
• gold#FFD700
• yellow-400#FDC700
• v3 yellow-300#FDE047
• yellow-300#FFDF20
• v3 amber-400#FBBF24
• amber-400#FFB900

Lighter and darker, same hue and chroma

• #FFE64D · oklch(0.938 0.169 91.9) · ΔL +0.06
• #EBBE00 · oklch(0.818 0.169 91.9) · ΔL −0.06

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