Information about #51821C color

#51821C color image

Basic facts about this digital color

In the Register's classification, #51821C belongs to the Chartreuse Color Family, featuring High Saturation and Neutral brightness. The mix behind it: rgb(81, 130, 28) — 31.8% red, 51% green, 11% blue; the print equivalent is CMYK 19 / 0 / 40 / 49. New to color codes? See our guide to RGB color codes.

#51821C is a energetic, saturated chartreuse that holds a balanced mid-tone. In practice it works well for bold branding moments and attention-grabbing details. In The Official Register of Color Names it is a near neighbor of Sap Green (#507D2A). Its next-closest registered neighbors are Seaweed Green (#437C17) and Green Cola (#4C721D).

In RGB terms — rgb(81, 130, 28) — the green channel does the heavy lifting here. If you plan to put text on a #51821C background, choose white — the contrast ratio is 4.6:1 (passing WCAG AA), while black manages only 4.6:1. Like most of the 16.7 million digital colors, this one is still waiting for a name — naming it takes a minute.

#51821C color variations

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

#51821C 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 #51821C

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

Sap Green color link
Sap Green

#507D2A

Green Cola color link
Green Cola

#4C721D

La Palma color link
La Palma

#428929

Bilbao color link
Bilbao

#3E8027

Mossy Green color link
Mossy Green

#638B27

Topspin color link
Topspin

#427120

Fresh Onion color link
Fresh Onion

#5B8930

Bitter Lime color link
Bitter Lime

#648C11

Vida Loca color link
Vida Loca

#5F9228

Kakapo color link
Kakapo

#5C9625

Conversions between color systems and etc.

  • HEX#51821C
  • RGB81, 130, 28
  • CMYK19, 0, 40, 49
  • CSSrgb(81, 130, 28)
  • HSL89°, 65%, 31%
  • HSL Precise88.824°, 64.557%, 30.98%
  • HSV89°, 78%, 51%
  • HSB89°, 78%, 51%
  • Normalized R (0.0–1.0)0.318
  • Normalized G (0.0–1.0)0.510
  • Normalized B (0.0–1.0)0.110
  • GLSLvec3(0.318, 0.510, 0.110)
  • GLSL with alphavec4(0.318, 0.510, 0.110, 1.000)
  • HLSL / Metalfloat3(0.318, 0.510, 0.110)
  • Percentage of Red in RGB31.8%
  • Percentage of Green in RGB51%
  • Percentage of Blue in RGB11%
  • Color FamilyChartreuse
  • Saturation FamilyHigh Saturation
  • Lightness FamilyNeutral
  • HEX ID51821C
  • DECIMAL ID5341724
  • Name LengthThis color has no name
  • Seen by search & AI crawlers24 times
  • Counting from2025-01-01