HEX to OKLCH: #FF2056

Also known as: Tailwind rose-500

#FF2056 → oklch(0.643 0.245 16.5)

Values are shown at full precision, so converting back gives exactly #ff2056. 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: 32/255 = 0.12549 → 0.014444  (((x + 0.055) / 1.055)^2.4)
B: 86/255 = 0.33725 → 0.093059  (((x + 0.055) / 1.055)^2.4)

2. linear sRGB → LMS

l = 0.4122·R + 0.5363·G + 0.0514·B = 0.424756
m = 0.2119·R + 0.6807·G + 0.1074·B = 0.231730
s = 0.0883·R + 0.2817·G + 0.6300·B = 0.150997

3. cube root

l′ = ∛0.424756 = 0.751703
m′ = ∛0.231730 = 0.614225
s′ = ∛0.150997 = 0.532504

4. LMS′ → Oklab

L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.64349
a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = 0.23511
b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = 0.06965

5. Oklab → OKLCH

C = √(a² + b²) = 0.24521
H = atan2(b, a) = 16.501°
L = 0.64349

6. OKLCH

oklch(0.64349 0.24521 16.501)
rounded: oklch(0.643 0.245 16.5)

All formats

HEX: #ff2056
RGB: rgb(255 32 86)
RGB (legacy): rgb(255, 32, 86)
HSL: hsl(345.47 100.00% 56.27%) → hsl(345 100% 56%)
HWB: hwb(345 13% 0%)
OKLCH: oklch(0.643 0.245 16.5) · oklch(64.3% 0.245 16.5)
OKLab: oklab(0.643 0.235 0.070)
Lab (D50): lab(55.94 79.17 31.47)
LCH (D50): lch(55.94 85.20 21.68)
Display P3: color(display-p3 0.9187 0.2405 0.3540)
Linear sRGB: color(srgb-linear 1.0000 0.0144 0.0931)

Gamut: sRGB and Display P3

#FF2056 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.245 and Display P3 reaches 0.290; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #ff2056;
  color: rgb(255 32 86);
  color: hsl(345 100% 56%);
  color: oklch(0.643 0.245 16.5);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.643 0.245 16.5);
}
/* arbitrary values */
class="text-[#ff2056] bg-[oklch(0.643_0.245_16.5)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.9187 0.2405 0.3540); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #ff2056 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

#FF4068 · oklch(0.703 0.245 16.5) · ΔL +0.06
#E80045 · oklch(0.583 0.245 16.5) · ΔL −0.06

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