HEX to OKLCH: #FFF085

Also known as: Tailwind yellow-200

#FFF085 → oklch(0.945 0.129 101.4)

Values are shown at full precision, so converting back gives exactly #fff085. 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. sRGB → linear

R: 255/255 = 1.00000 → 1.000000  (((x + 0.055) / 1.055)^2.4)
G: 240/255 = 0.94118 → 0.871367  (((x + 0.055) / 1.055)^2.4)
B: 133/255 = 0.52157 → 0.234551  (((x + 0.055) / 1.055)^2.4)

2. linear sRGB → LMS

l = 0.4122·R + 0.5363·G + 0.0514·B = 0.891631
m = 0.2119·R + 0.6807·G + 0.1074·B = 0.830233
s = 0.0883·R + 0.2817·G + 0.6300·B = 0.481545

3. cube root

l′ = ∛0.891631 = 0.962487
m′ = ∛0.830233 = 0.939867
s′ = ∛0.481545 = 0.783813

4. LMS′ → Oklab

L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.94526
a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = -0.02558
b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = 0.12678

5. Oklab → OKLCH

C = √(a² + b²) = 0.12934
H = atan2(b, a) = 101.405°
L = 0.94526

6. OKLCH

oklch(0.94526 0.12934 101.405)
rounded: oklch(0.945 0.129 101.4)

All formats

HEX: #fff085
RGB: rgb(255 240 133)
RGB (legacy): rgb(255, 240, 133)
HSL: hsl(52.62 100.00% 76.08%) → hsl(53 100% 76%)
HWB: hwb(53 52% 0%)
OKLCH: oklch(0.945 0.129 101.4) · oklch(94.5% 0.129 101.4)
OKLab: oklab(0.945 -0.026 0.127)
Lab (D50): lab(94.37 -4.90 53.16)
LCH (D50): lch(94.37 53.38 95.27)
Display P3: color(display-p3 0.9899 0.9432 0.5782)
Linear sRGB: color(srgb-linear 1.0000 0.8714 0.2346)

Gamut: sRGB and Display P3

#FFF085 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.129 and Display P3 reaches 0.150; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #fff085;
  color: rgb(255 240 133);
  color: hsl(53 100% 76%);
  color: oklch(0.945 0.129 101.4);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.945 0.129 101.4);
}
/* arbitrary values */
class="text-[#fff085] bg-[oklch(0.945_0.129_101.4)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.9899 0.9432 0.5782); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #fff085 calc(l - 0.1) c h); }

Nearby colors

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

Lighter and darker, same hue and chroma

#FFFF97 · oklch(1.000 0.129 101.4) · ΔL +0.06
#EBDC71 · oklch(0.885 0.129 101.4) · ΔL −0.06

Open in the studio

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Guides: What is OKLCH?