OKLCH to HEX: #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. input

   oklch(0.51057 0.23005 276.966)

2. 2. OKLCH → Oklab

   a = C·cos H = 0.02790
   b = C·sin H = -0.22835

3. 3. Oklab → LMS′

   l′ = L + 0.3963·a + 0.2158·b = 0.472349
   m′ = L − 0.1056·a − 0.0639·b = 0.522206
   s′ = L − 0.0895·a − 1.2915·b = 0.802986

4. 4. cube

   l = 0.472349³ = 0.105387
   m = 0.522206³ = 0.142405
   s = 0.802986³ = 0.517755

5. 5. LMS → linear sRGB

   R = 4.0767·l − 3.3077·m + 0.2310·s = 0.078188
   G = −1.2684·l + 2.6098·m − 0.3413·s = 0.061245
   B = −0.0042·l − 0.7034·m + 1.7076·s = 0.783514

6. 6. linear → sRGB, × 255

   R = 0.30981 × 255 = 79.00 → 79
   G = 0.27451 × 255 = 70.00 → 70
   B = 0.89803 × 255 = 229.00 → 229

7. 7. RGB → HEX

   #4F46E5

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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