Information about #21390F color

#21390F color image

Basic facts about this digital color

The digital color #21390F is classified in the Register under the Chartreuse Color Family, with Moderate Saturation and Dark brightness. In numbers: rgb(33, 57, 15) (12.9% red, 22.4% green, 5.9% blue), or CMYK 9 / 0 / 16 / 78 for print. Curious how these numbers work? Read our RGB color codes guide.

#21390F is a clearly saturated yellow-green that leans clearly toward the dark side. 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 just a few steps away from Dark Forest Green (#254117). Its next-closest registered neighbors are Bonsaisei (#1F3106) and ProKnox Green (#1A331A).

Technically, the mix leans on its green channel (rgb(33, 57, 15)), which gives #21390F its character. If you plan to put text on a #21390F background, choose white — the contrast ratio is 12.7:1 (passing WCAG AAA), while black manages only 1.7:1. On paper it relies strongly on black ink (K:78), so proof dark layouts before a large print run. No one has named #21390F so far. Register a name for it and it becomes a permanent record.

#21390F color variations

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

#21390F 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 #21390F

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

Bonsaisei color link
Bonsaisei

#1F3106

Myrtle color link
Myrtle

#21421E

Kereru color link
Kereru

#283E23

Celtic color link
Celtic

#163222

Deep Fir color link
Deep Fir

#193925

Rangitoto color link
Rangitoto

#2E3222

Pine Tree color link
Pine Tree

#2A2F23

Conversions between color systems and etc.

  • HEX#21390F
  • RGB33, 57, 15
  • CMYK9, 0, 16, 78
  • CSSrgb(33, 57, 15)
  • HSL94°, 58%, 14%
  • HSL Precise94.286°, 58.333%, 14.118%
  • HSV94°, 74%, 22%
  • HSB94°, 74%, 22%
  • Normalized R (0.0–1.0)0.129
  • Normalized G (0.0–1.0)0.224
  • Normalized B (0.0–1.0)0.059
  • GLSLvec3(0.129, 0.224, 0.059)
  • GLSL with alphavec4(0.129, 0.224, 0.059, 1.000)
  • HLSL / Metalfloat3(0.129, 0.224, 0.059)
  • Percentage of Red in RGB12.9%
  • Percentage of Green in RGB22.4%
  • Percentage of Blue in RGB5.9%
  • Color FamilyChartreuse
  • Saturation FamilyModerate Saturation
  • Lightness FamilyDark
  • HEX ID21390F
  • DECIMAL ID2177295
  • Name LengthThis color has no name
  • Seen by search & AI crawlers12 times
  • Counting from2025-01-01