HEX to OKLCH: #0284C7

Also known as: Tailwind v3 sky-600

#0284C7 → oklch(0.588 0.139 242.0)

Values are shown at full precision, so converting back gives exactly #0284c7. 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: 2/255 = 0.00784 → 0.000607  (÷ 12.92)
G: 132/255 = 0.51765 → 0.230740  (((x + 0.055) / 1.055)^2.4)
B: 199/255 = 0.78039 → 0.571125  (((x + 0.055) / 1.055)^2.4)

2. linear sRGB → LMS

l = 0.4122·R + 0.5363·G + 0.0514·B = 0.153386
m = 0.2119·R + 0.6807·G + 0.1074·B = 0.218530
s = 0.0883·R + 0.2817·G + 0.6300·B = 0.424854

3. cube root

l′ = ∛0.153386 = 0.535297
m′ = ∛0.218530 = 0.602334
s′ = ∛0.424854 = 0.751761

4. LMS′ → Oklab

L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.58762
a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = -0.06527
b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = -0.12257

5. Oklab → OKLCH

C = √(a² + b²) = 0.13887
H = atan2(b, a) = 241.966°
L = 0.58762

6. OKLCH

oklch(0.58762 0.13887 241.966)
rounded: oklch(0.588 0.139 242.0)

All formats

HEX: #0284c7
RGB: rgb(2 132 199)
RGB (legacy): rgb(2, 132, 199)
HSL: hsl(200.41 98.01% 39.41%) → hsl(200 98% 39%)
HWB: hwb(200 1% 22%)
OKLCH: oklch(0.588 0.139 242.0) · oklch(58.8% 0.139 242.0)
OKLab: oklab(0.588 -0.065 -0.123)
Lab (D50): lab(51.86 -11.66 -43.98)
LCH (D50): lch(51.86 45.50 255.15)
Display P3: color(display-p3 0.2251 0.5097 0.7591)
Linear sRGB: color(srgb-linear 0.0006 0.2307 0.5711)

Gamut: sRGB and Display P3

#0284C7 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.139 and Display P3 reaches 0.182; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #0284c7;
  color: rgb(2 132 199);
  color: hsl(200 98% 39%);
  color: oklch(0.588 0.139 242.0);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.588 0.139 242.0);
}
/* arbitrary values */
class="text-[#0284c7] bg-[oklch(0.588_0.139_242.0)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.2251 0.5097 0.7591); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #0284c7 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

#2997DB · oklch(0.648 0.139 242.0) · ΔL +0.06
#0072B3 · oklch(0.528 0.139 242.0) · ΔL −0.06

Open in the studio

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