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Information about #15535B color

#15535B color image

Basic facts about this digital color

In the Register's classification, #15535B belongs to the Cyan Color Family, featuring High Saturation and Dark brightness. In numbers: rgb(21, 83, 91) (8.2% red, 32.5% green, 35.7% blue), or CMYK 27 / 3 / 0 / 64 for print. Curious how these numbers work? Read our RGB color codes guide.

#15535B presents itself as a energetic, saturated water-like cyan — one that carries a shadowy depth. It is a natural fit for night-mode interfaces and high-contrast pairings with light text. In The Official Register of Color Names it is almost identical to Retro (#1B5256). Nearby in the Register you will also find Guru (#154C65) and Beatnik (#1F4F54).

The recipe behind #15535B is rgb(21, 83, 91), with blue as the dominant ingredient. If you plan to put text on a #15535B background, choose white — the contrast ratio is 8.7:1 (passing WCAG AAA), while black manages only 2.4:1. On paper it relies strongly on black ink (K:64), so proof dark layouts before a large print run. #15535B has no official name yet. If this shade means something to you, you can be the one to name it.

#15535B color variations

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

#15535B 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 #15535B

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

Retro color link
Retro

#1B5256

Guru color link
Guru

#154C65

Beatnik color link
Beatnik

#1F4F54

JayHawk Blue color link
JayHawk Blue

#194F6E

Push Play color link
Push Play

#21584C

Arapawa color link
Arapawa

#274A5D

Dark Opal color link
Dark Opal

#275953

Jackpot color link
Jackpot

#145346

Conversions between color systems and etc.

  • HEX#15535B
  • RGB21, 83, 91
  • CMYK27, 3, 0, 64
  • CSSrgb(21, 83, 91)
  • HSL187°, 63%, 22%
  • HSL Precise186.857°, 62.5%, 21.961%
  • HSV187°, 77%, 36%
  • HSB187°, 77%, 36%
  • Normalized R (0.0–1.0)0.082
  • Normalized G (0.0–1.0)0.325
  • Normalized B (0.0–1.0)0.357
  • GLSLvec3(0.082, 0.325, 0.357)
  • GLSL with alphavec4(0.082, 0.325, 0.357, 1.000)
  • HLSL / Metalfloat3(0.082, 0.325, 0.357)
  • Percentage of Red in RGB8.2%
  • Percentage of Green in RGB32.5%
  • Percentage of Blue in RGB35.7%
  • Color FamilyCyan
  • Saturation FamilyHigh Saturation
  • Lightness FamilyDark
  • HEX ID15535B
  • DECIMAL ID1397595
  • Name LengthThis color has no name
  • This page visited6 times
  • Counting from2025-01-01