Information about #21453D color

#21453D color image

Basic facts about this digital color

In the Register's classification, #21453D belongs to the Cyan Color Family, featuring Mild Saturation and Dark brightness. In numbers: rgb(33, 69, 61) (12.9% red, 27.1% green, 23.9% blue), or CMYK 14 / 0 / 3 / 73 for print. Curious how these numbers work? Read our RGB color codes guide.

#21453D presents itself as a moderately toned water-like cyan — one that leans clearly toward the dark side. 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 Zydeco (#20483F). Its next-closest registered neighbors are Tiki Tour (#234040) and Tile Green (#26433A).

The recipe behind #21453D is rgb(33, 69, 61), with green as the dominant ingredient. If you plan to put text on a #21453D background, choose white — the contrast ratio is 10.6:1 (passing WCAG AAA), while black manages only 2.0:1. For print, note the heavy black component (K:73) — ink coverage matters with tones this deep. No one has named #21453D so far. Register a name for it and it becomes a permanent record.

#21453D color variations

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

#21453D 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 #21453D

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

Zydeco color link
Zydeco

#20483F

Tiki Tour color link
Tiki Tour

#234040

Tile Green color link
Tile Green

#26433A

MSU Green color link
MSU Green

#18453B

Everglade color link
Everglade

#264334

Tiber color link
Tiber

#184343

Gable Green color link
Gable Green

#2C4641

Roulette color link
Roulette

#2A4D3E

Conversions between color systems and etc.

  • HEX#21453D
  • RGB33, 69, 61
  • CMYK14, 0, 3, 73
  • CSSrgb(33, 69, 61)
  • HSL167°, 35%, 20%
  • HSL Precise166.667°, 35.294%, 20%
  • HSV167°, 52%, 27%
  • HSB167°, 52%, 27%
  • Normalized R (0.0–1.0)0.129
  • Normalized G (0.0–1.0)0.271
  • Normalized B (0.0–1.0)0.239
  • GLSLvec3(0.129, 0.271, 0.239)
  • GLSL with alphavec4(0.129, 0.271, 0.239, 1.000)
  • HLSL / Metalfloat3(0.129, 0.271, 0.239)
  • Percentage of Red in RGB12.9%
  • Percentage of Green in RGB27.1%
  • Percentage of Blue in RGB23.9%
  • Color FamilyCyan
  • Saturation FamilyMild Saturation
  • Lightness FamilyDark
  • HEX ID21453D
  • DECIMAL ID2180413
  • Name LengthThis color has no name
  • Seen by search & AI crawlers25 times
  • Counting from2025-01-01