HEX to OKLCH: #166534

Result

Values are shown at full precision, so converting back gives exactly #166534. 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: 22/255 = 0.08627 → 0.008023  (((x + 0.055) / 1.055)^2.4)
   G: 101/255 = 0.39608 → 0.130136  (((x + 0.055) / 1.055)^2.4)
   B: 52/255 = 0.20392 → 0.034340  (((x + 0.055) / 1.055)^2.4)

2. 2. linear sRGB → LMS

   l = 0.4122·R + 0.5363·G + 0.0514·B = 0.074870
   m = 0.2119·R + 0.6807·G + 0.1074·B = 0.093972
   s = 0.0883·R + 0.2817·G + 0.6300·B = 0.059004

3. 3. cube root

   l′ = ∛0.074870 = 0.421473
   m′ = ∛0.093972 = 0.454638
   s′ = ∛0.059004 = 0.389308

4. 4. LMS′ → Oklab

   L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.44792
   a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = -0.09504
   b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = 0.05197

5. 5. Oklab → OKLCH

   C = √(a² + b²) = 0.10832
   H = atan2(b, a) = 151.328°
   L = 0.44792

6. 6. OKLCH

   oklch(0.44792 0.10832 151.328)
   rounded: oklch(0.448 0.108 151.3)

All formats

HEX

#166534

RGB

rgb(22 101 52)

RGB (legacy)

rgb(22, 101, 52)

HSL

hsl(142.78 64.23% 24.12%) → hsl(143 64% 24%)

HWB

hwb(143 9% 60%)

OKLCH

oklch(0.448 0.108 151.3) · oklch(44.8% 0.108 151.3)

OKLab

oklab(0.448 -0.095 0.052)

Lab (D50)

lab(37.33 -33.36 20.72)

LCH (D50)

lch(37.33 39.27 148.16)

Display P3

color(display-p3 0.1887 0.3902 0.2233)

Linear sRGB

color(srgb-linear 0.0080 0.1301 0.0343)

Gamut: sRGB and Display P3

#166534 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 0.167; this color uses 91% of the sRGB chroma available.

CSS snippets

.element {
  color: #166534;
  color: rgb(22 101 52);
  color: hsl(143 64% 24%);
  color: oklch(0.448 0.108 151.3);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.448 0.108 151.3);
}
/* arbitrary values */
class="text-[#166534] bg-[oklch(0.448_0.108_151.3)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.1887 0.3902 0.2233); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #166534 calc(l - 0.1) c h); }

Nearby colors

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

• green-800#016630
• emerald-800#006045
• v3 emerald-800#065F46
• v3 lime-800#3F6212
• lime-800#3C6300
• darkgreen#006400
• green-900#0D542B
• v3 lime-900#365314

Lighter and darker, same hue and chroma

• #2C7744 · oklch(0.508 0.108 151.3) · ΔL +0.06
• #005424 · oklch(0.388 0.108 151.3) · ΔL −0.06

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