HEX to OKLCH: #4F46E5

Result

Values are shown at full precision, so converting back gives exactly #4f46e5. 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: 70/255 = 0.27451 → 0.061246  (((x + 0.055) / 1.055)^2.4)
   B: 229/255 = 0.89804 → 0.783538  (((x + 0.055) / 1.055)^2.4)

2. 2. linear sRGB → LMS

   l = 0.4122·R + 0.5363·G + 0.0514·B = 0.105389
   m = 0.2119·R + 0.6807·G + 0.1074·B = 0.142408
   s = 0.0883·R + 0.2817·G + 0.6300·B = 0.517770

3. 3. cube root

   l′ = ∛0.105389 = 0.472351
   m′ = ∛0.142408 = 0.522209
   s′ = ∛0.517770 = 0.802994

4. 4. LMS′ → Oklab

   L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.51057
   a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = 0.02790
   b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = -0.22836

5. 5. Oklab → OKLCH

   C = √(a² + b²) = 0.23005
   H = atan2(b, a) = 276.966°
   L = 0.51057

6. 6. OKLCH

   oklch(0.51057 0.23005 276.966)
   rounded: oklch(0.511 0.230 277.0)

All formats

HEX

#4f46e5

RGB

rgb(79 70 229)

RGB (legacy)

rgb(79, 70, 229)

HSL

hsl(243.40 75.36% 58.63%) → hsl(243 75% 59%)

HWB

hwb(243 27% 10%)

OKLCH

oklch(0.511 0.230 277.0) · oklch(51.1% 0.230 277.0)

OKLab

oklab(0.511 0.028 -0.228)

Lab (D50)

lab(39.38 41.55 -80.97)

LCH (D50)

lch(39.38 91.00 297.16)

Display P3

color(display-p3 0.3039 0.2758 0.8646)

Linear sRGB

color(srgb-linear 0.0782 0.0612 0.7835)

Gamut: sRGB and Display P3

#4F46E5 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 0.297; this color uses 83% of the sRGB chroma available.

CSS snippets

.element {
  color: #4f46e5;
  color: rgb(79 70 229);
  color: hsl(243 75% 59%);
  color: oklch(0.511 0.230 277.0);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.511 0.230 277.0);
}
/* arbitrary values */
class="text-[#4f46e5] bg-[oklch(0.511_0.230_277.0)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.3039 0.2758 0.8646); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #4f46e5 calc(l - 0.1) c h); }

Nearby colors

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

• indigo-600#4F39F6
• indigo-700#432DD7
• v3 blue-700#1D4ED8
• v3 indigo-700#4338CA
• blue-700#1447E6
• v3 blue-600#2563EB
• v3 violet-700#6D28D9
• blue-600#155DFC

Lighter and darker, same hue and chroma

• #5E5BFA · oklch(0.571 0.230 277.0) · ΔL +0.06
• #422FD0 · oklch(0.451 0.230 277.0) · ΔL −0.06

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