HEX to HSL: #4B0082

Result

Values are shown at full precision, so converting back gives exactly #4b0082. 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. 1. RGB ÷ 255

   R = 0.2941
   G = 0.0000
   B = 0.5098

2. 2. max, min, Δ

   max = 0.5098
   min = 0.0000
   Δ = max − min = 0.5098

3. 3. L

   L = (max + min) / 2 = 0.2549 = 25.49%

4. 4. S

   S = Δ / (1 − |2L − 1|) = 1.0000 = 100.00%

5. 5. H

   max is B → H = 60° × ((R − G) / Δ + 4) = 60° × ((0.2941 − 0.0000) / 0.5098 + 4) = 274.62°

6. 6. HSL

   hsl(274.62 100.00% 25.49%)

All formats

HEX

#4b0082

RGB

rgb(75 0 130)

RGB (legacy)

rgb(75, 0, 130)

HSL

hsl(274.62 100.00% 25.49%) → hsl(275 100% 25%)

HWB

hwb(275 0% 49%)

OKLCH

oklch(0.339 0.179 301.7) · oklch(33.9% 0.179 301.7)

OKLab

oklab(0.339 0.094 -0.153)

Lab (D50)

lab(19.72 47.03 -54.28)

LCH (D50)

lch(19.72 71.82 310.91)

Display P3

color(display-p3 0.2668 0.0302 0.4895)

Linear sRGB

color(srgb-linear 0.0704 0.0000 0.2232)

Gamut: sRGB and Display P3

#4B0082 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.179 and Display P3 reaches 0.187; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #4b0082;
  color: rgb(75 0 130);
  color: hsl(275 100% 25%);
  color: oklch(0.339 0.179 301.7);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.339 0.179 301.7);
}
/* arbitrary values */
class="text-[#4b0082] bg-[oklch(0.339_0.179_301.7)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.2668 0.0302 0.4895); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #4b0082 calc(l - 0.1) c h); }

Nearby colors

Closest colors in the Tailwind and CSS named palettes (OKLab distance).

• purple-900#59168B
• v3 purple-900#581C87
• v3 violet-900#4C1D95
• violet-900#4D179A
• purple-950#3C0366
• v3 purple-950#3B0764
• violet-950#2F0D68
• indigo-900#312C85

Lighter and darker, same hue and chroma

• #5B1E95 · oklch(0.399 0.179 301.7) · ΔL +0.06
• #3C006F · oklch(0.279 0.179 301.7) · ΔL −0.06

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