HEX to HSL: #1D4ED8

Also known as: Tailwind v3 blue-700

#1D4ED8 → hsl(224 76% 48%)

Values are shown at full precision, so converting back gives exactly #1d4ed8. 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 = 0.1137
G = 0.3059
B = 0.8471
```

2. max, min, Δ

max = 0.8471
min = 0.1137
Δ = max − min = 0.7333

3. L
```
L = (max + min) / 2 = 0.4804 = 48.04%
```

4. S

S = Δ / (1 − |2L − 1|) = 0.7633 = 76.33%

5. H

max is B → H = 60° × ((R − G) / Δ + 4) = 60° × ((0.1137 − 0.3059) / 0.7333 + 4) = 224.28°

6. HSL
```
hsl(224.28 76.33% 48.04%)
```

All formats

HEX: #1d4ed8
RGB: rgb(29 78 216)
RGB (legacy): rgb(29, 78, 216)
HSL: hsl(224.28 76.33% 48.04%) → hsl(224 76% 48%)
HWB: hwb(224 11% 15%)
OKLCH: oklch(0.488 0.217 264.4) · oklch(48.8% 0.217 264.4)
OKLab: oklab(0.488 -0.021 -0.216)
Lab (D50): lab(37.66 27.02 -76.50)
LCH (D50): lch(37.66 81.13 289.45)
Display P3: color(display-p3 0.1666 0.3017 0.8158)
Linear sRGB: color(srgb-linear 0.0123 0.0762 0.6867)

Gamut: sRGB and Display P3

#1D4ED8 is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.289 and Display P3 reaches 0.308; this color uses 75% of the sRGB chroma available.

CSS snippets

.element {
  color: #1d4ed8;
  color: rgb(29 78 216);
  color: hsl(224 76% 48%);
  color: oklch(0.488 0.217 264.4);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.488 0.217 264.4);
}
/* arbitrary values */
class="text-[#1d4ed8] bg-[oklch(0.488_0.217_264.4)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.1666 0.3017 0.8158); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #1d4ed8 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

#2D62ED · oklch(0.548 0.217 264.4) · ΔL +0.06
#0D39C3 · oklch(0.428 0.217 264.4) · 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?