HEX to OKLCH: #C27AFF

Also known as: Tailwind purple-400

#C27AFF → oklch(0.710 0.196 307.1)

Values are shown at full precision, so converting back gives exactly #c27aff. 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: 194/255 = 0.76078 → 0.539479  (((x + 0.055) / 1.055)^2.4)
G: 122/255 = 0.47843 → 0.194618  (((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 = 0.378211
m = 0.2119·R + 0.6807·G + 0.1074·B = 0.354191
s = 0.0883·R + 0.2817·G + 0.6300·B = 0.732444

3. cube root

l′ = ∛0.378211 = 0.723177
m′ = ∛0.354191 = 0.707531
s′ = ∛0.732444 = 0.901415

4. LMS′ → Oklab

L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.71003
a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = 0.11831
b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = -0.15638

5. Oklab → OKLCH

C = √(a² + b²) = 0.19609
H = atan2(b, a) = 307.109°
L = 0.71003

6. OKLCH

oklch(0.71003 0.19609 307.109)
rounded: oklch(0.710 0.196 307.1)

All formats

HEX: #c27aff
RGB: rgb(194 122 255)
RGB (legacy): rgb(194, 122, 255)
HSL: hsl(272.48 100.00% 73.92%) → hsl(272 100% 74%)
HWB: hwb(272 48% 0%)
OKLCH: oklch(0.710 0.196 307.1) · oklch(71.0% 0.196 307.1)
OKLab: oklab(0.710 0.118 -0.156)
Lab (D50): lab(63.36 46.71 -56.09)
LCH (D50): lch(63.36 73.00 309.79)
Display P3: color(display-p3 0.7208 0.4913 0.9703)
Linear sRGB: color(srgb-linear 0.5395 0.1946 1.0000)

Gamut: sRGB and Display P3

#C27AFF is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.196 and Display P3 reaches 0.214; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #c27aff;
  color: rgb(194 122 255);
  color: hsl(272 100% 74%);
  color: oklch(0.710 0.196 307.1);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.710 0.196 307.1);
}
/* arbitrary values */
class="text-[#c27aff] bg-[oklch(0.710_0.196_307.1)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.7208 0.4913 0.9703); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #c27aff 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

#D58DFF · oklch(0.770 0.196 307.1) · ΔL +0.06
#AF67EA · oklch(0.650 0.196 307.1) · ΔL −0.06

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