HEX to OKLCH: #6495ED

Result

Values are shown at full precision, so converting back gives exactly #6495ed. 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: 100/255 = 0.39216 → 0.127438  (((x + 0.055) / 1.055)^2.4)
   G: 149/255 = 0.58431 → 0.300544  (((x + 0.055) / 1.055)^2.4)
   B: 237/255 = 0.92941 → 0.846873  (((x + 0.055) / 1.055)^2.4)

2. 2. linear sRGB → LMS

   l = 0.4122·R + 0.5363·G + 0.0514·B = 0.257292
   m = 0.2119·R + 0.6807·G + 0.1074·B = 0.322536
   s = 0.0883·R + 0.2817·G + 0.6300·B = 0.629434

3. 3. cube root

   l′ = ∛0.257292 = 0.636027
   m′ = ∛0.322536 = 0.685793
   s′ = ∛0.629434 = 0.857005

4. 4. LMS′ → Oklab

   L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.67462
   a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = -0.02129
   b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = -0.13974

5. 5. Oklab → OKLCH

   C = √(a² + b²) = 0.14136
   H = atan2(b, a) = 261.338°
   L = 0.67462

6. 6. OKLCH

   oklch(0.67462 0.14136 261.338)
   rounded: oklch(0.675 0.141 261.3)

All formats

HEX

#6495ed

RGB

rgb(100 149 237)

RGB (legacy)

rgb(100, 149, 237)

HSL

hsl(218.54 79.19% 66.08%) → hsl(219 79% 66%)

HWB

hwb(219 39% 7%)

OKLCH

oklch(0.675 0.141 261.3) · oklch(67.5% 0.141 261.3)

OKLab

oklab(0.675 -0.021 -0.140)

Lab (D50)

lab(61.23 3.05 -50.19)

LCH (D50)

lch(61.23 50.28 273.47)

Display P3

color(display-p3 0.4343 0.5792 0.9038)

Linear sRGB

color(srgb-linear 0.1274 0.3005 0.8469)

Gamut: sRGB and Display P3

#6495ED is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.172 and Display P3 reaches 0.186; this color uses 82% of the sRGB chroma available.

CSS snippets

.element {
  color: #6495ed;
  color: rgb(100 149 237);
  color: hsl(219 79% 66%);
  color: oklch(0.675 0.141 261.3);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.675 0.141 261.3);
}
/* arbitrary values */
class="text-[#6495ed] bg-[oklch(0.675_0.141_261.3)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.4343 0.5792 0.9038); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #6495ed calc(l - 0.1) c h); }

Nearby colors

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

• blue-400#51A2FF
• v3 blue-400#60A5FA
• v3 indigo-400#818CF8
• indigo-400#7C86FF
• dodgerblue#1E90FF
• sky-500#00A6F4
• v3 sky-500#0EA5E9
• v3 blue-500#3B82F6

Lighter and darker, same hue and chroma

• #76A8FF · oklch(0.735 0.141 261.3) · ΔL +0.06
• #5382D9 · oklch(0.615 0.141 261.3) · ΔL −0.06

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