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Dark Slate Blue

Hex #483D8B, rgb(72 61 139). A blue CSS named color.

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Dark Slate Blue color codes

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HEX
RGB
HSL
HSV
HWB
CMYK
OKLCH
OKLab
Lab
LCH
CSS keyword

About Dark Slate Blue

Dark Slate Blue is a dark saturated blue with the hex code #483D8B. In RGB it is made of 72 red, 61 green and 139 blue; in HSL its hue is 248°, with 39% saturation and 39% lightness. Its perceptual lightness (OKLCH L) is 41.4%.

It is a CSS named color, so you can write "darkslateblue" anywhere CSS accepts a color. Against white it has a contrast ratio of 9.07:1 and against black 2.32:1, so white text reads better on it and passes WCAG AA for normal text.

Tints, shades and tones

Dark Slate Blue mixed step by step with white, black and middle gray (#808080).

Tints (with white)

Shades (with black)

Tones (with gray)

Dark Slate Blue 50-950 scale

A Tailwind-style scale built in OKLCH; the original color sits on the step with the closest lightness.

Colors that go with Dark Slate Blue

Color harmonies rotate the hue in OKLCH and keep the lightness and chroma. Each color links to its closest named color.

Complementary

Analogous

Triadic

Split complementary

Tetradic

Square

Monochromatic

Contrast and readability

WCAG 2 contrast of Dark Slate Blue with white and black. The readable text color on Dark Slate Blue is white.

Dark Slate Blue textSmall text on white

On white9.07:1

  • AA pass
  • AA Large pass
  • AAA pass
  • UI 3:1 pass

APCA Lc 91

Dark Slate Blue textSmall text on black

On black2.32:1

  • AA fail
  • AA Large fail
  • AAA fail
  • UI 3:1 fail

APCA Lc -12

White text on Dark Slate Blue (#FFFFFF)

Test any pair in the contrast checker.

Color blindness preview

How Dark Slate Blue appears with each type of color vision deficiency (simulated with the Machado model).

  • Protanopia#124B8E
  • Deuteranopia#104689
  • Tritanopia#324E5E
  • Protanomaly#28478D
  • Deuteranomaly#26458A
  • Tritanomaly#424579
  • Achromatopsia#494949

Colors similar to Dark Slate Blue

The closest named colors by perceptual difference (OKLab).

Use Dark Slate Blue in CSS and Tailwind

CSS
.dark-slate-blue {
  color: darkslateblue; /* #483D8B */
  background-color: rgb(72 61 139);
  border-color: oklch(41.4% 0.125 286);
}
Tailwind CSS
/* Tailwind CSS v4: bg-dark-slate-blue-500, text-dark-slate-blue-700... */
@theme {
  --color-dark-slate-blue-50: #F9F9FF;
  --color-dark-slate-blue-100: #EDEDFF;
  --color-dark-slate-blue-200: #DADAFF;
  --color-dark-slate-blue-300: #BFBDFF;
  --color-dark-slate-blue-400: #9E94FF;
  --color-dark-slate-blue-500: #8A77FF;
  --color-dark-slate-blue-600: #7A61F2;
  --color-dark-slate-blue-700: #6550CC;
  --color-dark-slate-blue-800: #5545A7;
  --color-dark-slate-blue-900: #483D8B;
  --color-dark-slate-blue-950: #150A3A;
}

<!-- or the exact color, no config -->
<div class="bg-[#483D8B] text-[#FFFFFF]">…</div>