Information about #21423C color

#21423C color image

Basic facts about this digital color

#21423C falls into the Cyan Color FamilyMild Saturation, Dark brightness. Its exact recipe is rgb(33, 66, 60) — 12.9% red, 25.9% green, 23.5% blue — and for print it converts to CMYK 13 / 0 / 2 / 74. Curious how these numbers work? Read our RGB color codes guide.

#21423C is a moderately toned aqua cyan that stays on the darker end of the scale. It is a natural fit for dark UI themes, backgrounds and dramatic accents. In The Official Register of Color Names it is practically indistinguishable from Tiki Tour (#234040). Slightly further away sit Tile Green (#26433A) and Zydeco (#20483F).

Technically, the mix leans on its green channel (rgb(33, 66, 60)), which gives #21423C its character. Accessibility-wise, white text works best on #21423C: 11.0:1 contrast (passing WCAG AAA) versus 1.9:1 for black. On paper it relies strongly on black ink (K:74), so proof dark layouts before a large print run. Like most of the 16.7 million digital colors, this one is still waiting for a name — naming it takes a minute.

#21423C color variations

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

#21423C 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 #21423C

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

Tiki Tour color link
Tiki Tour

#234040

Tile Green color link
Tile Green

#26433A

Zydeco color link
Zydeco

#20483F

Everglade color link
Everglade

#264334

MSU Green color link
MSU Green

#18453B

Nordic color link
Nordic

#1D393C

Tiber color link
Tiber

#184343

Stokesian 13 color link
Stokesian 13

#164238

Conversions between color systems and etc.

  • HEX#21423C
  • RGB33, 66, 60
  • CMYK13, 0, 2, 74
  • CSSrgb(33, 66, 60)
  • HSL169°, 33%, 19%
  • HSL Precise169.091°, 33.333%, 19.412%
  • HSV169°, 50%, 26%
  • HSB169°, 50%, 26%
  • Normalized R (0.0–1.0)0.129
  • Normalized G (0.0–1.0)0.259
  • Normalized B (0.0–1.0)0.235
  • GLSLvec3(0.129, 0.259, 0.235)
  • GLSL with alphavec4(0.129, 0.259, 0.235, 1.000)
  • HLSL / Metalfloat3(0.129, 0.259, 0.235)
  • Percentage of Red in RGB12.9%
  • Percentage of Green in RGB25.9%
  • Percentage of Blue in RGB23.5%
  • Color FamilyCyan
  • Saturation FamilyMild Saturation
  • Lightness FamilyDark
  • HEX ID21423C
  • DECIMAL ID2179644
  • Name LengthThis color has no name
  • Seen by search & AI crawlers21 times
  • Counting from2025-01-01