HEX to OKLCH: #9333EA

Also known as: Tailwind v3 purple-600

#9333EA → oklch(0.558 0.252 302.3)

Values are shown at full precision, so converting back gives exactly #9333ea. 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: 147/255 = 0.57647 → 0.291771  (((x + 0.055) / 1.055)^2.4)
G: 51/255 = 0.20000 → 0.033105  (((x + 0.055) / 1.055)^2.4)
B: 234/255 = 0.91765 → 0.822786  (((x + 0.055) / 1.055)^2.4)

2. linear sRGB → LMS

l = 0.4122·R + 0.5363·G + 0.0514·B = 0.180358
m = 0.2119·R + 0.6807·G + 0.1074·B = 0.172726
s = 0.0883·R + 0.2817·G + 0.6300·B = 0.553428

3. cube root

l′ = ∛0.180358 = 0.564996
m′ = ∛0.172726 = 0.556911
s′ = ∛0.553428 = 0.821020

4. LMS′ → Oklab

L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.55754
a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = 0.13500
b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = -0.21337

5. Oklab → OKLCH

C = √(a² + b²) = 0.25249
H = atan2(b, a) = 302.321°
L = 0.55754

6. OKLCH

oklch(0.55754 0.25249 302.321)
rounded: oklch(0.558 0.252 302.3)

All formats

HEX: #9333ea
RGB: rgb(147 51 234)
RGB (legacy): rgb(147, 51, 234)
HSL: hsl(271.48 81.33% 55.88%) → hsl(271 81% 56%)
HWB: hwb(271 20% 8%)
OKLCH: oklch(0.558 0.252 302.3) · oklch(55.8% 0.252 302.3)
OKLab: oklab(0.558 0.135 -0.213)
Lab (D50): lab(44.02 63.35 -75.85)
LCH (D50): lch(44.02 98.82 309.87)
Display P3: color(display-p3 0.5330 0.2257 0.8842)
Linear sRGB: color(srgb-linear 0.2918 0.0331 0.8228)

Gamut: sRGB and Display P3

#9333EA is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.294 and Display P3 reaches 0.307; this color uses 86% of the sRGB chroma available.

CSS snippets

.element {
  color: #9333ea;
  color: rgb(147 51 234);
  color: hsl(271 81% 56%);
  color: oklch(0.558 0.252 302.3);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.558 0.252 302.3);
}
/* arbitrary values */
class="text-[#9333ea] bg-[oklch(0.558_0.252_302.3)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.5330 0.2257 0.8842); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #9333ea 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

#A54BFF · oklch(0.618 0.252 302.3) · ΔL +0.06
#8113D5 · oklch(0.498 0.252 302.3) · ΔL −0.06

Open in the studio

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