RGB to HEX: #483D8B

Also known as: CSS darkslateblue

rgb(72 61 139) → #483D8B

Values are shown at full precision, so converting back gives exactly #483d8b. 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. base 10 → base 16

R = 72 = 4×16 + 8 → 48
G = 61 = 3×16 + 13 → 3D
B = 139 = 8×16 + 11 → 8B

2. pairs → HEX
```
48 3D 8B → #483D8B
```

All formats

HEX: #483d8b
RGB: rgb(72 61 139)
RGB (legacy): rgb(72, 61, 139)
HSL: hsl(248.46 39.00% 39.22%) → hsl(248 39% 39%)
HWB: hwb(248 24% 45%)
OKLCH: oklch(0.414 0.125 286.0) · oklch(41.4% 0.125 286.0)
OKLab: oklab(0.414 0.034 -0.120)
Lab (D50): lab(30.28 21.41 -42.74)
LCH (D50): lch(30.28 47.81 296.61)
Display P3: color(display-p3 0.2753 0.2408 0.5267)
Linear sRGB: color(srgb-linear 0.0648 0.0467 0.2582)

Gamut: sRGB and Display P3

#483D8B is a hex color, so it sits inside sRGB and therefore inside Display P3. At this lightness and hue, sRGB reaches chroma 0.240 and Display P3 reaches 0.245; this color uses 52% of the sRGB chroma available.

CSS snippets

.element {
  color: #483d8b;
  color: rgb(72 61 139);
  color: hsl(248 39% 39%);
  color: oklch(0.414 0.125 286.0);
}

/* Tailwind CSS v4 */
@theme {
  --color-brand: oklch(0.414 0.125 286.0);
}
/* arbitrary values */
class="text-[#483d8b] bg-[oklch(0.414_0.125_286.0)]"

/* wide-gamut screens */
@media (color-gamut: p3) {
  .element { color: color(display-p3 0.2753 0.2408 0.5267); }
}

/* relative color syntax: 10% darker */
.element-dark { color: oklch(from #483d8b 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

#584E9E · oklch(0.474 0.125 286.0) · ΔL +0.06
#392C78 · oklch(0.354 0.125 286.0) · 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?