Browse colors
#666699
Exact match

Dark Horizon

Hex
#666699
RGB
102, 102, 153
CIELAB
45.1, 12.5, -27.7
Source
color-names
Licence
MIT
Palettes

Color schemes with Dark Horizon

Built by rotating the hue in OKLCH, so every colour keeps the same lightness instead of drifting the way an HSL rotation does. Each one is named and clickable.

Complementary

The colour directly opposite. Maximum contrast — good for a single accent against a dominant colour.

Analogous

Neighbours on either side. Calm and cohesive, because nothing fights for attention.

Triadic

Three colours evenly spaced around the wheel. Vivid but balanced.

Split complementary

The two colours either side of the opposite. Nearly the contrast of a complementary pair, with less tension.

Tetradic

Two complementary pairs. The richest scheme, and the easiest to overdo — let one colour lead.

Monochromatic

One hue at several lightnesses. Reliable for interfaces, where hue changes read as meaning.

Variations

Shades, tints and tones

Formats

#666699 in every format

HEX
#666699
RGB
rgb(102, 102, 153)
HSL
hsl(240, 20%, 50%)
CMYK
33, 33, 0, 40
CIELAB
45.1, 12.5, -27.7
OKLCH
0.532 0.079 283.4
Accessibility

Text on this color

White text reads best, at 5.3:1.

Sample text

5.35:1

Sample text

3.93:1

  • WCAG AA, normal text (4.5:1)passes
  • WCAG AA, large text (3:1)passes
  • WCAG AAA, normal text (7:1)fails