Information about #221F37 color

#221F37 color image

Basic facts about this digital color

In the Register's classification, #221F37 belongs to the Blue Color Family, featuring Mild Saturation and Dark brightness. The mix behind it: rgb(34, 31, 55) — 13.3% red, 12.2% green, 21.6% blue; the print equivalent is CMYK 8 / 9 / 0 / 78. Curious how these numbers work? Read our RGB color codes guide.

The color #221F37 reads as a mildly saturated classic blue and carries a shadowy depth. Expect to see shades like this in night-mode interfaces and high-contrast pairings with light text. In The Official Register of Color Names it is almost identical to Nite Life (#1D2134). Nearby in the Register you will also find Midnight Express (#21263A) and Blue Night (#1F263B).

The recipe behind #221F37 is rgb(34, 31, 55), with blue as the dominant ingredient. If you plan to put text on a #221F37 background, choose white — the contrast ratio is 15.9:1 (passing WCAG AAA), while black manages only 1.3:1. For print, note the heavy black component (K:78) — ink coverage matters with tones this deep. Out of 16,777,216 possible colors, #221F37 is still unnamed — it can be claimed and named in The Official Register of Color Names.

#221F37 color variations

View this color variations of tints, shades, tones and hues.

#221F37 color harmonies

Color harmonies are pleasing color schemes created according to their position on a color wheel.

Complementary

Complementary color schemes are made by picking two opposite colors con the color wheel. They appear vibrant near to each other.

Complementary color schemes

Split complementary

Split complementary schemes are like complementary but they uses two adiacent colors of the complement. They are more flexible than complementary ones.

Split complementary color scheme

Analogous

Analogous color schemes are made by picking three colors that are next to each other on the color wheel. They are perceived as calm and serene.

Analogous color scheme

Triadic

Triadic color schemes are created by picking three colors equally spaced on the color wheel. They appear quite contrasted and multicolored.

Triadic color scheme

Tetradic

Tetradic color schemes are made form two couples of complementary colors in a rectangular shape on the color wheel.

Tetradic color scheme

Square

Square color schemes are like tetradic arranged in a square instead of rectangle. Colors appear even more contrasting.

Square color scheme

Nearest named colors to #221F37

The closest officially registered color names in the Register, ordered by similarity — your shade’s neighborhood is already being claimed.

Nite Life color link
Nite Life

#1D2134

Blue Night color link
Blue Night

#1F263B

Bullitt color link
Bullitt

#27253C

Indian Ink color link
Indian Ink

#232732

Montana color link
Montana

#291E30

Dark color link
Dark

#1B2431

Ebony Clay color link
Ebony Clay

#26283B

Sonic Boom color link
Sonic Boom

#252042

Surfs Up color link
Surfs Up

#1F2142

Daytona color link
Daytona

#1E222C

Conversions between color systems and etc.

  • HEX#221F37
  • RGB34, 31, 55
  • CMYK8, 9, 0, 78
  • CSSrgb(34, 31, 55)
  • HSL248°, 28%, 17%
  • HSL Precise247.5°, 27.907%, 16.863%
  • HSV248°, 44%, 22%
  • HSB248°, 44%, 22%
  • Normalized R (0.0–1.0)0.133
  • Normalized G (0.0–1.0)0.122
  • Normalized B (0.0–1.0)0.216
  • GLSLvec3(0.133, 0.122, 0.216)
  • GLSL with alphavec4(0.133, 0.122, 0.216, 1.000)
  • HLSL / Metalfloat3(0.133, 0.122, 0.216)
  • Percentage of Red in RGB13.3%
  • Percentage of Green in RGB12.2%
  • Percentage of Blue in RGB21.6%
  • Color FamilyBlue
  • Saturation FamilyMild Saturation
  • Lightness FamilyDark
  • HEX ID221F37
  • DECIMAL ID2236215
  • Name LengthThis color has no name
  • Seen by search & AI crawlers9 times
  • Counting from2025-01-01