HEX to HSL: #009966

Also known as: Tailwind emerald-600

#009966 → hsl(160 100% 30%)

Values are shown at full precision, so converting back gives exactly #009966. 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. RGB ÷ 255
```
R = 0.0000
G = 0.6000
B = 0.4000
```

2. max, min, Δ

max = 0.6000
min = 0.0000
Δ = max − min = 0.6000

3. L
```
L = (max + min) / 2 = 0.3000 = 30.00%
```

4. S

S = Δ / (1 − |2L − 1|) = 1.0000 = 100.00%

5. H

max is G → H = 60° × ((B − R) / Δ + 2) = 60° × ((0.4000 − 0.0000) / 0.6000 + 2) = 160.00°

6. HSL
```
hsl(160.00 100.00% 30.00%)
```

All formats

HEX: #009966
RGB: rgb(0 153 102)
RGB (legacy): rgb(0, 153, 102)
HSL: hsl(160.00 100.00% 30.00%) → hsl(160 100% 30%)
HWB: hwb(160 0% 40%)
OKLCH: oklch(0.603 0.134 160.9) · oklch(60.3% 0.134 160.9)
OKLab: oklab(0.603 -0.127 0.044)
Lab (D50): lab(55.73 -45.32 16.82)
LCH (D50): lch(55.73 48.34 159.64)
Display P3: color(display-p3 0.2637 0.5909 0.4156)
Linear sRGB: color(srgb-linear 0.0000 0.3185 0.1329)

Gamut: sRGB and Display P3

#009966 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.134 and Display P3 reaches 0.185; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #009966;
  color: rgb(0 153 102);
  color: hsl(160 100% 30%);
  color: oklch(0.603 0.134 160.9);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.603 0.134 160.9);
}
/* arbitrary values */
class="text-[#009966] bg-[oklch(0.603_0.134_160.9)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.2637 0.5909 0.4156); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #009966 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

#2CAC78 · oklch(0.663 0.134 160.9) · ΔL +0.06
#008655 · oklch(0.543 0.134 160.9) · ΔL −0.06

Open in the studio

Open in the OKLCH picker Check contrast on white

Other converters for this color

All converters →

Guides: What is OKLCH?