HEX to HSL: #104E64

Also known as: Tailwind cyan-900

#104E64 → hsl(196 72% 23%)

Values are shown at full precision, so converting back gives exactly #104e64. 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 = 0.0627
G = 0.3059
B = 0.3922
```

2. max, min, Δ

max = 0.3922
min = 0.0627
Δ = max − min = 0.3294

3. L
```
L = (max + min) / 2 = 0.2275 = 22.75%
```

4. S

S = Δ / (1 − |2L − 1|) = 0.7241 = 72.41%

5. H

max is B → H = 60° × ((R − G) / Δ + 4) = 60° × ((0.0627 − 0.3059) / 0.3294 + 4) = 195.71°

6. HSL
```
hsl(195.71 72.41% 22.75%)
```

All formats

HEX: #104e64
RGB: rgb(16 78 100)
RGB (legacy): rgb(16, 78, 100)
HSL: hsl(195.71 72.41% 22.75%) → hsl(196 72% 23%)
HWB: hwb(196 6% 61%)
OKLCH: oklch(0.397 0.070 227.2) · oklch(39.7% 0.070 227.2)
OKLab: oklab(0.397 -0.047 -0.051)
Lab (D50): lab(30.28 -13.23 -18.68)
LCH (D50): lch(30.28 22.89 234.69)
Display P3: color(display-p3 0.1418 0.3012 0.3836)
Linear sRGB: color(srgb-linear 0.0052 0.0762 0.1274)

Gamut: sRGB and Display P3

#104E64 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.077 and Display P3 reaches 0.101; this color uses 91% of the sRGB chroma available.

CSS snippets

.element {
  color: #104e64;
  color: rgb(16 78 100);
  color: hsl(196 72% 23%);
  color: oklch(0.397 0.070 227.2);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.397 0.070 227.2);
}
/* arbitrary values */
class="text-[#104e64] bg-[oklch(0.397_0.070_227.2)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.1418 0.3012 0.3836); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #104e64 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

#255F75 · oklch(0.457 0.070 227.2) · ΔL +0.06
#003E53 · oklch(0.337 0.070 227.2) · ΔL −0.06

Open in the studio

Open in the OKLCH picker Check contrast on white

Other converters for this color

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Guides: What is OKLCH?