HEX to OKLCH: #00CED1

Also known as: CSS darkturquoise

#00CED1 → oklch(0.772 0.131 196.6)

Values are shown at full precision, so converting back gives exactly #00ced1. 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. sRGB → linear

R: 0/255 = 0.00000 → 0.000000  (÷ 12.92)
G: 206/255 = 0.80784 → 0.617207  (((x + 0.055) / 1.055)^2.4)
B: 209/255 = 0.81961 → 0.637597  (((x + 0.055) / 1.055)^2.4)

2. linear sRGB → LMS

l = 0.4122·R + 0.5363·G + 0.0514·B = 0.363830
m = 0.2119·R + 0.6807·G + 0.1074·B = 0.488608
s = 0.0883·R + 0.2817·G + 0.6300·B = 0.575551

3. cube root

l′ = ∛0.363830 = 0.713892
m′ = ∛0.488608 = 0.787626
s′ = ∛0.575551 = 0.831817

4. LMS′ → Oklab

L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.77193
a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = -0.12593
b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = -0.03765

5. Oklab → OKLCH

C = √(a² + b²) = 0.13144
H = atan2(b, a) = 196.643°
L = 0.77193

6. OKLCH

oklch(0.77193 0.13144 196.643)
rounded: oklch(0.772 0.131 196.6)

All formats

HEX: #00ced1
RGB: rgb(0 206 209)
RGB (legacy): rgb(0, 206, 209)
HSL: hsl(180.86 100.00% 40.98%) → hsl(181 100% 41%)
HWB: hwb(181 0% 18%)
OKLCH: oklch(0.772 0.131 196.6) · oklch(77.2% 0.131 196.6)
OKLab: oklab(0.772 -0.126 -0.038)
Lab (D50): lab(74.90 -42.43 -14.23)
LCH (D50): lch(74.90 44.75 198.54)
Display P3: color(display-p3 0.3649 0.7958 0.8125)
Linear sRGB: color(srgb-linear 0.0000 0.6172 0.6376)

Gamut: sRGB and Display P3

#00CED1 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.131 and Display P3 reaches 0.176; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #00ced1;
  color: rgb(0 206 209);
  color: hsl(181 100% 41%);
  color: oklch(0.772 0.131 196.6);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.772 0.131 196.6);
}
/* arbitrary values */
class="text-[#00ced1] bg-[oklch(0.772_0.131_196.6)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.3649 0.7958 0.8125); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #00ced1 calc(l - 0.1) c h); }

Nearby colors

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

Lighter and darker, same hue and chroma

#38E2E5 · oklch(0.832 0.131 196.6) · ΔL +0.06
#00BABE · oklch(0.712 0.131 196.6) · ΔL −0.06

Open in the studio

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