HEX to OKLCH: #00D3F2

Also known as: Tailwind cyan-400

#00D3F2 → oklch(0.797 0.140 213.2)

Values are shown at full precision, so converting back gives exactly #00d3f2. 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: 211/255 = 0.82745 → 0.651406  (((x + 0.055) / 1.055)^2.4)
B: 242/255 = 0.94902 → 0.887923  (((x + 0.055) / 1.055)^2.4)

2. linear sRGB → LMS

l = 0.4122·R + 0.5363·G + 0.0514·B = 0.395050
m = 0.2119·R + 0.6807·G + 0.1074·B = 0.538772
s = 0.0883·R + 0.2817·G + 0.6300·B = 0.742886

3. cube root

l′ = ∛0.395050 = 0.733754
m′ = ∛0.538772 = 0.813707
s′ = ∛0.742886 = 0.905678

4. LMS′ → Oklab

L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.79651
a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = -0.11671
b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = -0.07645

5. Oklab → OKLCH

C = √(a² + b²) = 0.13951
H = atan2(b, a) = 213.226°
L = 0.79651

6. OKLCH

oklch(0.79651 0.13951 213.226)
rounded: oklch(0.797 0.140 213.2)

All formats

HEX: #00d3f2
RGB: rgb(0 211 242)
RGB (legacy): rgb(0, 211, 242)
HSL: hsl(187.69 100.00% 47.45%) → hsl(188 100% 47%)
HWB: hwb(188 0% 5%)
OKLCH: oklch(0.797 0.140 213.2) · oklch(79.7% 0.140 213.2)
OKLab: oklab(0.797 -0.117 -0.076)
Lab (D50): lab(77.33 -36.37 -28.18)
LCH (D50): lch(77.33 46.01 217.76)
Display P3: color(display-p3 0.3744 0.8151 0.9336)
Linear sRGB: color(srgb-linear 0.0000 0.6514 0.8879)

Gamut: sRGB and Display P3

#00D3F2 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.140 and Display P3 reaches 0.186; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #00d3f2;
  color: rgb(0 211 242);
  color: hsl(188 100% 47%);
  color: oklch(0.797 0.140 213.2);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.797 0.140 213.2);
}
/* arbitrary values */
class="text-[#00d3f2] bg-[oklch(0.797_0.140_213.2)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.3744 0.8151 0.9336); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #00d3f2 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

#39E7FF · oklch(0.857 0.140 213.2) · ΔL +0.06
#00BFDE · oklch(0.737 0.140 213.2) · ΔL −0.06

Open in the studio

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Guides: What is OKLCH?