Information about #121237 color

#121237 color image

Basic facts about this digital color

In the Register's classification, #121237 belongs to the Blue Color Family, featuring Moderate Saturation and Dark brightness. In numbers: rgb(18, 18, 55) (7.1% red, 7.1% green, 21.6% blue), or CMYK 15 / 15 / 0 / 78 for print. Curious how these numbers work? Read our RGB color codes guide.

A pleasantly vivid blue, #121237 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 very close to Elderberry (#17182B). Nearby in the Register you will also find I am Core Group International (#151529) and Deep Cove (#051040).

Technically, the mix leans on its blue channel (rgb(18, 18, 55)), which gives #121237 its character. If you plan to put text on a #121237 background, choose white — the contrast ratio is 18.0:1 (passing WCAG AAA), while black manages only 1.2:1. On paper it relies strongly on black ink (K:78), so proof dark layouts before a large print run. Out of 16,777,216 possible colors, #121237 is still unnamed — it can be claimed and named in The Official Register of Color Names.

#121237 color variations

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

#121237 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 #121237

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

Conversions between color systems and etc.

  • HEX#121237
  • RGB18, 18, 55
  • CMYK15, 15, 0, 78
  • CSSrgb(18, 18, 55)
  • HSL240°, 51%, 14%
  • HSL Precise240°, 50.685%, 14.314%
  • HSV240°, 67%, 22%
  • HSB240°, 67%, 22%
  • Normalized R (0.0–1.0)0.071
  • Normalized G (0.0–1.0)0.071
  • Normalized B (0.0–1.0)0.216
  • GLSLvec3(0.071, 0.071, 0.216)
  • GLSL with alphavec4(0.071, 0.071, 0.216, 1.000)
  • HLSL / Metalfloat3(0.071, 0.071, 0.216)
  • Percentage of Red in RGB7.1%
  • Percentage of Green in RGB7.1%
  • Percentage of Blue in RGB21.6%
  • Color FamilyBlue
  • Saturation FamilyModerate Saturation
  • Lightness FamilyDark
  • HEX ID121237
  • DECIMAL ID1184311
  • Name LengthThis color has no name
  • This page visited5 times
  • Counting from2025-01-01