Information about #173121 color

#173121 color image

Basic facts about this digital color

The digital color #173121 is classified in the Register under the Spring Green Color Family, with Mild Saturation and Dark brightness. Its exact recipe is rgb(23, 49, 33) — 9% red, 19.2% green, 12.9% blue — and for print it converts to CMYK 10 / 0 / 6 / 81. New to color codes? See our guide to RGB color codes.

#173121 presents itself as a softly balanced spring green — one 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 practically indistinguishable from Celtic (#163222). Nearby in the Register you will also find Phthalo Green (#123524) and Cardin Green (#1B3427).

Technically, the mix leans on its green channel (rgb(23, 49, 33)), which gives #173121 its character. If you plan to put text on a #173121 background, choose white — the contrast ratio is 14.0:1 (passing WCAG AAA), while black manages only 1.5:1. For print, note the heavy black component (K:81) — ink coverage matters with tones this deep. #173121 has no official name yet. If this shade means something to you, you can be the one to name it.

#173121 color variations

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

#173121 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 #173121

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

Celtic color link
Celtic

#163222

Cardin Green color link
Cardin Green

#1B3427

Deep Fir color link
Deep Fir

#193925

Madagascar color link
Madagascar

#172E2C

Bush color link
Bush

#0D2E1C

Kermadec color link
Kermadec

#1D2C2A

Sentry color link
Sentry

#1C2728

Bledisloe color link
Bledisloe

#19282B

Conversions between color systems and etc.

  • HEX#173121
  • RGB23, 49, 33
  • CMYK10, 0, 6, 81
  • CSSrgb(23, 49, 33)
  • HSL143°, 36%, 14%
  • HSL Precise143.077°, 36.111%, 14.118%
  • HSV143°, 53%, 19%
  • HSB143°, 53%, 19%
  • Normalized R (0.0–1.0)0.090
  • Normalized G (0.0–1.0)0.192
  • Normalized B (0.0–1.0)0.129
  • GLSLvec3(0.090, 0.192, 0.129)
  • GLSL with alphavec4(0.090, 0.192, 0.129, 1.000)
  • HLSL / Metalfloat3(0.090, 0.192, 0.129)
  • Percentage of Red in RGB9%
  • Percentage of Green in RGB19.2%
  • Percentage of Blue in RGB12.9%
  • Color FamilySpring Green
  • Saturation FamilyMild Saturation
  • Lightness FamilyDark
  • HEX ID173121
  • DECIMAL ID1519905
  • Name LengthThis color has no name
  • Seen by search & AI crawlers13 times
  • Counting from2025-01-01