HEX to OKLCH: #FFD700

Result

Values are shown at full precision, so converting back gives exactly #ffd700. 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: 215/255 = 0.84314 → 0.679542  (((x + 0.055) / 1.055)^2.4)
   B: 0/255 = 0.00000 → 0.000000  (÷ 12.92)

2. 2. linear sRGB → LMS

   l = 0.4122·R + 0.5363·G + 0.0514·B = 0.776682
   m = 0.2119·R + 0.6807·G + 0.1074·B = 0.674468
   s = 0.0883·R + 0.2817·G + 0.6300·B = 0.279742

3. 3. cube root

   l′ = ∛0.776682 = 0.919209
   m′ = ∛0.674468 = 0.876975
   s′ = ∛0.279742 = 0.654013

4. 4. LMS′ → Oklab

   L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.88677
   a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = -0.01693
   b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = 0.18140

5. 5. Oklab → OKLCH

   C = √(a² + b²) = 0.18219
   H = atan2(b, a) = 95.330°
   L = 0.88677

6. 6. OKLCH

   oklch(0.88677 0.18219 95.330)
   rounded: oklch(0.887 0.182 95.3)

All formats

HEX

#ffd700

RGB

rgb(255 215 0)

RGB (legacy)

rgb(255, 215, 0)

HSL

hsl(50.59 100.00% 50.00%) → hsl(51 100% 50%)

HWB

hwb(51 0% 0%)

OKLCH

oklch(0.887 0.182 95.3) · oklch(88.7% 0.182 95.3)

OKLab

oklab(0.887 -0.017 0.181)

Lab (D50)

lab(87.47 2.91 86.55)

LCH (D50)

lch(87.47 86.60 88.07)

Display P3

color(display-p3 0.9746 0.8490 0.2855)

Linear sRGB

color(srgb-linear 1.0000 0.6795 0.0000)

Gamut: sRGB and Display P3

#FFD700 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.182 and Display P3 reaches 0.211; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #ffd700;
  color: rgb(255 215 0);
  color: hsl(51 100% 50%);
  color: oklch(0.887 0.182 95.3);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.887 0.182 95.3);
}
/* arbitrary values */
class="text-[#ffd700] bg-[oklch(0.887_0.182_95.3)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.9746 0.8490 0.2855); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #ffd700 calc(l - 0.1) c h); }

Nearby colors

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

• yellow-300#FFDF20
• amber-300#FFD230
• v3 yellow-300#FDE047
• v3 yellow-400#FACC15
• v3 amber-300#FCD34D
• yellow-400#FDC700
• v3 amber-400#FBBF24
• amber-200#FEE685

Lighter and darker, same hue and chroma

• #FFEB38 · oklch(0.947 0.182 95.3) · ΔL +0.06
• #EBC300 · oklch(0.827 0.182 95.3) · ΔL −0.06

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