HEX to HSL: #2B7FFF

Also known as: Tailwind blue-500

#2B7FFF → hsl(216 100% 58%)

Values are shown at full precision, so converting back gives exactly #2b7fff. 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 = 0.1686
G = 0.4980
B = 1.0000
```

2. max, min, Δ

max = 1.0000
min = 0.1686
Δ = max − min = 0.8314

3. L
```
L = (max + min) / 2 = 0.5843 = 58.43%
```

4. S

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

5. H

max is B → H = 60° × ((R − G) / Δ + 4) = 60° × ((0.1686 − 0.4980) / 0.8314 + 4) = 216.23°

6. HSL
```
hsl(216.23 100.00% 58.43%)
```

All formats

HEX: #2b7fff
RGB: rgb(43 127 255)
RGB (legacy): rgb(43, 127, 255)
HSL: hsl(216.23 100.00% 58.43%) → hsl(216 100% 58%)
HWB: hwb(216 17% 0%)
OKLCH: oklch(0.619 0.207 259.2) · oklch(61.9% 0.207 259.2)
OKLab: oklab(0.619 -0.039 -0.203)
Lab (D50): lab(53.83 11.48 -72.05)
LCH (D50): lch(53.83 72.95 279.05)
Display P3: color(display-p3 0.2661 0.4912 0.9669)
Linear sRGB: color(srgb-linear 0.0242 0.2122 1.0000)

Gamut: sRGB and Display P3

#2B7FFF is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.207 and Display P3 reaches 0.222; this color uses 100% of the sRGB chroma available.

CSS snippets

.element {
  color: #2b7fff;
  color: rgb(43 127 255);
  color: hsl(216 100% 58%);
  color: oklch(0.619 0.207 259.2);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.619 0.207 259.2);
}
/* arbitrary values */
class="text-[#2b7fff] bg-[oklch(0.619_0.207_259.2)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.2661 0.4912 0.9669); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #2b7fff 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

#3F93FF · oklch(0.679 0.207 259.2) · ΔL +0.06
#136CEA · oklch(0.559 0.207 259.2) · 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?