Information about #153A21 color

#153A21 color image

Basic facts about this digital color

In the Register's classification, #153A21 belongs to the Spring Green Color Family, featuring Moderate Saturation and Dark brightness. The mix behind it: rgb(21, 58, 33) — 8.2% red, 22.7% green, 12.9% blue; the print equivalent is CMYK 15 / 0 / 10 / 77. New to color codes? See our guide to RGB color codes.

#153A21 is a confidently colored spring green that carries a shadowy depth. In practice it works well for night-mode interfaces and high-contrast pairings with light text. In The Official Register of Color Names it is a hair away from Deep Fir (#193925). Nearby in the Register you will also find Phthalo Green (#123524) and Celtic (#163222).

Technically, the mix leans on its green channel (rgb(21, 58, 33)), which gives #153A21 its character. If you plan to put text on a #153A21 background, choose white — the contrast ratio is 12.7:1 (passing WCAG AAA), while black manages only 1.7:1. For print, note the heavy black component (K:77) — ink coverage matters with tones this deep. #153A21 has no official name yet. If this shade means something to you, you can be the one to name it.

#153A21 color variations

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

#153A21 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 #153A21

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#153A21
  • RGB21, 58, 33
  • CMYK15, 0, 10, 77
  • CSSrgb(21, 58, 33)
  • HSL139°, 47%, 15%
  • HSL Precise139.459°, 46.835%, 15.49%
  • HSV139°, 64%, 23%
  • HSB139°, 64%, 23%
  • Normalized R (0.0–1.0)0.082
  • Normalized G (0.0–1.0)0.227
  • Normalized B (0.0–1.0)0.129
  • GLSLvec3(0.082, 0.227, 0.129)
  • GLSL with alphavec4(0.082, 0.227, 0.129, 1.000)
  • HLSL / Metalfloat3(0.082, 0.227, 0.129)
  • Percentage of Red in RGB8.2%
  • Percentage of Green in RGB22.7%
  • Percentage of Blue in RGB12.9%
  • Color FamilySpring Green
  • Saturation FamilyModerate Saturation
  • Lightness FamilyDark
  • HEX ID153A21
  • DECIMAL ID1391137
  • Name LengthThis color has no name
  • Seen by search & AI crawlers3 times
  • Counting from2025-01-01