HEX to OKLCH: #BA55D3

Also known as: CSS mediumorchid

#BA55D3 → oklch(0.626 0.202 319.2)

Values are shown at full precision, so converting back gives exactly #ba55d3. 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: 186/255 = 0.72941 → 0.491021  (((x + 0.055) / 1.055)^2.4)
G: 85/255 = 0.33333 → 0.090842  (((x + 0.055) / 1.055)^2.4)
B: 211/255 = 0.82745 → 0.651406  (((x + 0.055) / 1.055)^2.4)

2. linear sRGB → LMS

l = 0.4122·R + 0.5363·G + 0.0514·B = 0.284643
m = 0.2119·R + 0.6807·G + 0.1074·B = 0.235844
s = 0.0883·R + 0.2817·G + 0.6300·B = 0.479322

3. cube root

l′ = ∛0.284643 = 0.657809
m′ = ∛0.235844 = 0.617838
s′ = ∛0.479322 = 0.782605

4. LMS′ → Oklab

L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.62558
a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = 0.15331
b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = -0.13221

5. Oklab → OKLCH

C = √(a² + b²) = 0.20244
H = atan2(b, a) = 319.226°
L = 0.62558

6. OKLCH

oklch(0.62558 0.20244 319.226)
rounded: oklch(0.626 0.202 319.2)

All formats

HEX: #ba55d3
RGB: rgb(186 85 211)
RGB (legacy): rgb(186, 85, 211)
HSL: hsl(288.10 58.88% 58.04%) → hsl(288 59% 58%)
HWB: hwb(288 33% 17%)
OKLCH: oklch(0.626 0.202 319.2) · oklch(62.6% 0.202 319.2)
OKLab: oklab(0.626 0.153 -0.132)
Lab (D50): lab(53.37 55.02 -47.45)
LCH (D50): lch(53.37 72.66 319.23)
Display P3: color(display-p3 0.6800 0.3561 0.8025)
Linear sRGB: color(srgb-linear 0.4910 0.0908 0.6514)

Gamut: sRGB and Display P3

#BA55D3 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.301 and Display P3 reaches 0.324; this color uses 67% of the sRGB chroma available.

CSS snippets

.element {
  color: #ba55d3;
  color: rgb(186 85 211);
  color: hsl(288 59% 58%);
  color: oklch(0.626 0.202 319.2);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.626 0.202 319.2);
}
/* arbitrary values */
class="text-[#ba55d3] bg-[oklch(0.626_0.202_319.2)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.6800 0.3561 0.8025); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #ba55d3 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

#CE68E7 · oklch(0.686 0.202 319.2) · ΔL +0.06
#A741BF · oklch(0.566 0.202 319.2) · ΔL −0.06

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