Information about #21B9A7 color

#21B9A7 color image

Basic facts about this digital color

In the Register's classification, #21B9A7 belongs to the Cyan Color Family, featuring High Saturation and Light brightness. In numbers: rgb(33, 185, 167) (12.9% red, 72.5% green, 65.5% blue), or CMYK 60 / 0 / 7 / 27 for print. New to color codes? See our guide to RGB color codes.

A strongly colored aqua cyan, #21B9A7 carries an easy, daylight feel. Designers typically reach for tones like this for accents, call-to-action elements and statement visuals. In The Official Register of Color Names it is practically indistinguishable from Tealish (#24BCA8). Slightly further away sit Light Sea Green (#20B2AA) and Dali (#20C29E).

Technically, the mix leans on its green channel (rgb(33, 185, 167)), which gives #21B9A7 its character. Accessibility-wise, black text works best on #21B9A7: 8.6:1 contrast (passing WCAG AAA) versus 2.5:1 for white. Like most of the 16.7 million digital colors, this one is still waiting for a name — naming it takes a minute.

#21B9A7 color variations

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

#21B9A7 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 #21B9A7

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

Tealish color link
Tealish

#24BCA8

Dali color link
Dali

#20C29E

AITriedPume color link
AITriedPume

#13B6A9

Spring Teal color link
Spring Teal

#0EA7A5

Keppel color link
Keppel

#3AB09E

Greenblue color link
Greenblue

#23C48B

Pelorous color link
Pelorous

#2599B2

Boy Red color link
Boy Red

#0E9CA5

Conversions between color systems and etc.

  • HEX#21B9A7
  • RGB33, 185, 167
  • CMYK60, 0, 7, 27
  • CSSrgb(33, 185, 167)
  • HSL173°, 70%, 43%
  • HSL Precise172.895°, 69.725%, 42.745%
  • HSV173°, 82%, 73%
  • HSB173°, 82%, 73%
  • Normalized R (0.0–1.0)0.129
  • Normalized G (0.0–1.0)0.725
  • Normalized B (0.0–1.0)0.655
  • GLSLvec3(0.129, 0.725, 0.655)
  • GLSL with alphavec4(0.129, 0.725, 0.655, 1.000)
  • HLSL / Metalfloat3(0.129, 0.725, 0.655)
  • Percentage of Red in RGB12.9%
  • Percentage of Green in RGB72.5%
  • Percentage of Blue in RGB65.5%
  • Color FamilyCyan
  • Saturation FamilyHigh Saturation
  • Lightness FamilyLight
  • HEX ID21B9A7
  • DECIMAL ID2210215
  • Name LengthThis color has no name
  • Seen by search & AI crawlers5 times
  • Counting from2025-01-01