HEX to OKLCH: #8E51FF

Also known as: Tailwind violet-500

#8E51FF → oklch(0.601 0.242 293.9)

Values are shown at full precision, so converting back gives exactly #8e51ff. 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: 142/255 = 0.55686 → 0.270498  (((x + 0.055) / 1.055)^2.4)
G: 81/255 = 0.31765 → 0.082283  (((x + 0.055) / 1.055)^2.4)
B: 255/255 = 1.00000 → 1.000000  (((x + 0.055) / 1.055)^2.4)

2. linear sRGB → LMS

l = 0.4122·R + 0.5363·G + 0.0514·B = 0.207082
m = 0.2119·R + 0.6807·G + 0.1074·B = 0.220726
s = 0.0883·R + 0.2817·G + 0.6300·B = 0.677045

3. cube root

l′ = ∛0.207082 = 0.591626
m′ = ∛0.220726 = 0.604345
s′ = ∛0.677045 = 0.878090

4. LMS′ → Oklab

L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.60055
a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = 0.09819
b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = -0.22170

5. Oklab → OKLCH

C = √(a² + b²) = 0.24247
H = atan2(b, a) = 293.888°
L = 0.60055

6. OKLCH

oklch(0.60055 0.24247 293.888)
rounded: oklch(0.601 0.242 293.9)

All formats

HEX: #8e51ff
RGB: rgb(142 81 255)
RGB (legacy): rgb(142, 81, 255)
HSL: hsl(261.03 100.00% 65.88%) → hsl(261 100% 66%)
HWB: hwb(261 32% 0%)
OKLCH: oklch(0.601 0.242 293.9) · oklch(60.1% 0.242 293.9)
OKLab: oklab(0.601 0.098 -0.222)
Lab (D50): lab(49.47 53.83 -78.76)
LCH (D50): lch(49.47 95.40 304.36)
Display P3: color(display-p3 0.5242 0.3292 0.9645)
Linear sRGB: color(srgb-linear 0.2705 0.0823 1.0000)

Gamut: sRGB and Display P3

#8E51FF is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.242 and Display P3 reaches 0.261; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #8e51ff;
  color: rgb(142 81 255);
  color: hsl(261 100% 66%);
  color: oklch(0.601 0.242 293.9);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.601 0.242 293.9);
}
/* arbitrary values */
class="text-[#8e51ff] bg-[oklch(0.601_0.242_293.9)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.5242 0.3292 0.9645); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #8e51ff 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

#9F66FF · oklch(0.661 0.242 293.9) · ΔL +0.06
#7D3BEA · oklch(0.541 0.242 293.9) · ΔL −0.06

Open in the studio

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