Information about #15603B color

#15603B color image

Basic facts about this digital color

The digital color #15603B is classified in the Register under the Spring Green Color Family, with High Saturation and Dark brightness. In numbers: rgb(21, 96, 59) (8.2% red, 37.6% green, 23.1% blue), or CMYK 29 / 0 / 15 / 62 for print. Curious how these numbers work? Read our RGB color codes guide.

#15603B is a energetic, saturated minty spring green that carries a shadowy depth. 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 Fun Green (#15633D). Nearby in the Register you will also find Grass Stain (#165B31) and Spruce (#0A5F38).

In RGB terms — rgb(21, 96, 59) — the green channel does the heavy lifting here. If you plan to put text on a #15603B background, choose white — the contrast ratio is 7.6:1 (passing WCAG AAA), while black manages only 2.8:1. On paper it relies strongly on black ink (K:62), so proof dark layouts before a large print run. #15603B has no official name yet. If this shade means something to you, you can be the one to name it.

#15603B color variations

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

#15603B 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 #15603B

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

#15603B color backgrounds & wallpapers

Download color wallpaper / background for your Desktop PC, Tablet or Mobile phone.

Conversions between color systems and etc.

  • HEX#15603B
  • RGB21, 96, 59
  • CMYK29, 0, 15, 62
  • CSSrgb(21, 96, 59)
  • HSL150°, 64%, 23%
  • HSL Precise150.4°, 64.103%, 22.941%
  • HSV150°, 78%, 38%
  • HSB150°, 78%, 38%
  • Normalized R (0.0–1.0)0.082
  • Normalized G (0.0–1.0)0.376
  • Normalized B (0.0–1.0)0.231
  • GLSLvec3(0.082, 0.376, 0.231)
  • GLSL with alphavec4(0.082, 0.376, 0.231, 1.000)
  • HLSL / Metalfloat3(0.082, 0.376, 0.231)
  • Percentage of Red in RGB8.2%
  • Percentage of Green in RGB37.6%
  • Percentage of Blue in RGB23.1%
  • Color Family (Hue)Spring Green
  • Saturation FamilyHigh Saturation
  • Lightness FamilyDark
  • HEX ID15603B
  • DECIMAL ID1400891
  • Name LengthThis color has no name
  • This page visited6 times
  • Counting from2025-01-01