HEX to OKLCH: #00D492

Also known as: Tailwind emerald-400

#00D492 → oklch(0.769 0.169 161.9)

Values are shown at full precision, so converting back gives exactly #00d492. 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: 212/255 = 0.83137 → 0.658375  (((x + 0.055) / 1.055)^2.4)
B: 146/255 = 0.57255 → 0.287441  (((x + 0.055) / 1.055)^2.4)

2. linear sRGB → LMS

l = 0.4122·R + 0.5363·G + 0.0514·B = 0.367896
m = 0.2119·R + 0.6807·G + 0.1074·B = 0.479026
s = 0.0883·R + 0.2817·G + 0.6300·B = 0.366558

3. cube root

l′ = ∛0.367896 = 0.716542
m′ = ∛0.479026 = 0.782443
s′ = ∛0.366558 = 0.715672

4. LMS′ → Oklab

L = 0.2105·l′ + 0.7936·m′ − 0.0041·s′ = 0.76885
a = 1.9780·l′ − 2.4286·m′ + 0.4506·s′ = -0.16044
b = 0.0259·l′ + 0.7828·m′ − 0.8087·s′ = 0.05229

5. Oklab → OKLCH

C = √(a² + b²) = 0.16875
H = atan2(b, a) = 161.949°
L = 0.76885

6. OKLCH

oklch(0.76885 0.16875 161.949)
rounded: oklch(0.769 0.169 161.9)

All formats

HEX: #00d492
RGB: rgb(0 212 146)
RGB (legacy): rgb(0, 212, 146)
HSL: hsl(161.32 100.00% 41.57%) → hsl(161 100% 42%)
HWB: hwb(161 0% 17%)
OKLCH: oklch(0.769 0.169 161.9) · oklch(76.9% 0.169 161.9)
OKLab: oklab(0.769 -0.160 0.052)
Lab (D50): lab(75.41 -57.24 19.93)
LCH (D50): lch(75.41 60.61 160.80)
Display P3: color(display-p3 0.3763 0.8190 0.5921)
Linear sRGB: color(srgb-linear 0.0000 0.6584 0.2874)

Gamut: sRGB and Display P3

#00D492 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.169 and Display P3 reaches 0.232; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #00d492;
  color: rgb(0 212 146);
  color: hsl(161 100% 42%);
  color: oklch(0.769 0.169 161.9);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.769 0.169 161.9);
}
/* arbitrary values */
class="text-[#00d492] bg-[oklch(0.769_0.169_161.9)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.3763 0.8190 0.5921); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #00d492 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

#38E8A5 · oklch(0.829 0.169 161.9) · ΔL +0.06
#00C080 · oklch(0.709 0.169 161.9) · ΔL −0.06

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