HEX to HSL: #3B82F6

Also known as: Tailwind v3 blue-500

#3B82F6 → hsl(217 91% 60%)

Values are shown at full precision, so converting back gives exactly #3b82f6. 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 = 0.2314
G = 0.5098
B = 0.9647
```

2. max, min, Δ

max = 0.9647
min = 0.2314
Δ = max − min = 0.7333

3. L
```
L = (max + min) / 2 = 0.5980 = 59.80%
```

4. S

S = Δ / (1 − |2L − 1|) = 0.9122 = 91.22%

5. H

max is B → H = 60° × ((R − G) / Δ + 4) = 60° × ((0.2314 − 0.5098) / 0.7333 + 4) = 217.22°

6. HSL
```
hsl(217.22 91.22% 59.80%)
```

All formats

HEX: #3b82f6
RGB: rgb(59 130 246)
RGB (legacy): rgb(59, 130, 246)
HSL: hsl(217.22 91.22% 59.80%) → hsl(217 91% 60%)
HWB: hwb(217 23% 4%)
OKLCH: oklch(0.623 0.188 259.8) · oklch(62.3% 0.188 259.8)
OKLab: oklab(0.623 -0.033 -0.185)
Lab (D50): lab(54.62 8.76 -65.79)
LCH (D50): lch(54.62 66.37 277.59)
Display P3: color(display-p3 0.3047 0.5035 0.9338)
Linear sRGB: color(srgb-linear 0.0437 0.2232 0.9216)

Gamut: sRGB and Display P3

#3B82F6 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.204 and Display P3 reaches 0.219; this color uses 92% of the sRGB chroma available.

CSS snippets

.element {
  color: #3b82f6;
  color: rgb(59 130 246);
  color: hsl(217 91% 60%);
  color: oklch(0.623 0.188 259.8);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.623 0.188 259.8);
}
/* arbitrary values */
class="text-[#3b82f6] bg-[oklch(0.623_0.188_259.8)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.3047 0.5035 0.9338); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #3b82f6 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

#4E95FF · oklch(0.683 0.188 259.8) · ΔL +0.06
#286FE1 · oklch(0.563 0.188 259.8) · 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?