HEX to OKLCH: #4F39F6

Result

Values are shown at full precision, so converting back gives exactly #4f39f6. 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. sRGB → linear

   R: 79/255 = 0.30980 → 0.078187  (((x + 0.055) / 1.055)^2.4)
   G: 57/255 = 0.22353 → 0.040915  (((x + 0.055) / 1.055)^2.4)
   B: 246/255 = 0.96471 → 0.921582  (((x + 0.055) / 1.055)^2.4)

2. 2. linear sRGB → LMS

   l = 0.4122·R + 0.5363·G + 0.0514·B = 0.101586
   m = 0.2119·R + 0.6807·G + 0.1074·B = 0.143394
   s = 0.0883·R + 0.2817·G + 0.6300·B = 0.599008

3. 3. cube root

   l′ = ∛0.101586 = 0.466600
   m′ = ∛0.143394 = 0.523412
   s′ = ∛0.599008 = 0.842967

4. 4. LMS′ → Oklab

   L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.51015
   a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = 0.03162
   b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = -0.25989

5. 5. Oklab → OKLCH

   C = √(a² + b²) = 0.26180
   H = atan2(b, a) = 276.936°
   L = 0.51015

6. 6. OKLCH

   oklch(0.51015 0.26180 276.936)
   rounded: oklch(0.510 0.262 276.9)

All formats

HEX

#4f39f6

RGB

rgb(79 57 246)

RGB (legacy)

rgb(79, 57, 246)

HSL

hsl(246.98 91.30% 59.41%) → hsl(247 91% 59%)

HWB

hwb(247 22% 4%)

OKLCH

oklch(0.510 0.262 276.9) · oklch(51.0% 0.262 276.9)

OKLab

oklab(0.510 0.032 -0.260)

Lab (D50)

lab(38.30 52.59 -92.32)

LCH (D50)

lch(38.30 106.25 299.67)

Display P3

color(display-p3 0.2966 0.2270 0.9277)

Linear sRGB

color(srgb-linear 0.0782 0.0409 0.9216)

Gamut: sRGB and Display P3

#4F39F6 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.278 and Display P3 reaches 0.298; this color uses 94% of the sRGB chroma available.

CSS snippets

.element {
  color: #4f39f6;
  color: rgb(79 57 246);
  color: hsl(247 91% 59%);
  color: oklch(0.510 0.262 276.9);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.510 0.262 276.9);
}
/* arbitrary values */
class="text-[#4f39f6] bg-[oklch(0.510_0.262_276.9)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.2966 0.2270 0.9277); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #4f39f6 calc(l - 0.1) c h); }

Nearby colors

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

• v3 indigo-600#4F46E5
• indigo-700#432DD7
• blue-700#1447E6
• v3 indigo-700#4338CA
• v3 blue-700#1D4ED8
• blue-600#155DFC
• v3 violet-700#6D28D9
• violet-700#7008E7

Lighter and darker, same hue and chroma

• #5D51FF · oklch(0.570 0.262 276.9) · ΔL +0.06
• #431AE1 · oklch(0.450 0.262 276.9) · ΔL −0.06

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