HEX to HSL: #0369A1

Result

Values are shown at full precision, so converting back gives exactly #0369a1. 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 = 0.0118
   G = 0.4118
   B = 0.6314

2. 2. max, min, Δ

   max = 0.6314
   min = 0.0118
   Δ = max − min = 0.6196

3. 3. L

   L = (max + min) / 2 = 0.3216 = 32.16%

4. 4. S

   S = Δ / (1 − |2L − 1|) = 0.9634 = 96.34%

5. 5. H

   max is B → H = 60° × ((R − G) / Δ + 4) = 60° × ((0.0118 − 0.4118) / 0.6196 + 4) = 201.27°

6. 6. HSL

   hsl(201.27 96.34% 32.16%)

All formats

HEX

#0369a1

RGB

rgb(3 105 161)

RGB (legacy)

rgb(3, 105, 161)

HSL

hsl(201.27 96.34% 32.16%) → hsl(201 96% 32%)

HWB

hwb(201 1% 37%)

OKLCH

oklch(0.500 0.119 242.7) · oklch(50.0% 0.119 242.7)

OKLab

oklab(0.500 -0.055 -0.106)

Lab (D50)

lab(41.70 -9.35 -38.03)

LCH (D50)

lch(41.70 39.17 256.19)

Display P3

color(display-p3 0.1749 0.4053 0.6137)

Linear sRGB

color(srgb-linear 0.0009 0.1413 0.3564)

Gamut: sRGB and Display P3

#0369A1 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.120 and Display P3 reaches 0.157; this color uses 99% of the sRGB chroma available.

CSS snippets

.element {
  color: #0369a1;
  color: rgb(3 105 161);
  color: hsl(201 96% 32%);
  color: oklch(0.500 0.119 242.7);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.500 0.119 242.7);
}
/* arbitrary values */
class="text-[#0369a1] bg-[oklch(0.500_0.119_242.7)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.1749 0.4053 0.6137); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #0369a1 calc(l - 0.1) c h); }

Nearby colors

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

• sky-700#0069A8
• cyan-700#007595
• v3 cyan-700#0E7490
• sky-800#00598A
• v3 sky-800#075985
• cyan-800#005F78
• v3 cyan-800#155E75
• v3 sky-600#0284C7

Lighter and darker, same hue and chroma

• #247BB4 · oklch(0.560 0.119 242.7) · ΔL +0.06
• #00578E · oklch(0.440 0.119 242.7) · ΔL −0.06

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