Information about #51001D color

#51001D color image

Basic facts about this digital color

In the Register's classification, #51001D belongs to the Rose Color Family, featuring Full Saturation and Dark brightness. In numbers: rgb(81, 0, 29) (31.8% red, 0% green, 11.4% blue), or CMYK 0 / 32 / 20 / 68 for print. New to color codes? See our guide to RGB color codes.

#51001D presents itself as a maximally vivid romantic rose — one that leans clearly toward the dark side. 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 almost identical to Castro (#52001F). Its next-closest registered neighbors are Dark Scarlet (#560319) and Deep Raspberry (#590021).

The recipe behind #51001D is rgb(81, 0, 29), with red as the dominant ingredient. If you plan to put text on a #51001D background, choose white — the contrast ratio is 15.4:1 (passing WCAG AAA), while black manages only 1.4:1. On paper it relies strongly on black ink (K:68), so proof dark layouts before a large print run. Like most of the 16.7 million digital colors, this one is still waiting for a name — naming it takes a minute.

#51001D color variations

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

#51001D 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 #51001D

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#51001D
  • RGB81, 0, 29
  • CMYK0, 32, 20, 68
  • CSSrgb(81, 0, 29)
  • HSL339°, 100%, 16%
  • HSL Precise338.519°, 100%, 15.882%
  • HSV339°, 100%, 32%
  • HSB339°, 100%, 32%
  • Normalized R (0.0–1.0)0.318
  • Normalized G (0.0–1.0)0.000
  • Normalized B (0.0–1.0)0.114
  • GLSLvec3(0.318, 0.000, 0.114)
  • GLSL with alphavec4(0.318, 0.000, 0.114, 1.000)
  • HLSL / Metalfloat3(0.318, 0.000, 0.114)
  • Percentage of Red in RGB31.8%
  • Percentage of Green in RGB0%
  • Percentage of Blue in RGB11.4%
  • Color FamilyRose
  • Saturation FamilyFull Saturation
  • Lightness FamilyDark
  • HEX ID51001D
  • DECIMAL ID5308445
  • Name LengthThis color has no name
  • This page visited3 times
  • Counting from2025-01-01