Information about #231E51 color

#231E51 color image

Basic facts about this digital color

The digital color #231E51 is classified in the Register under the Blue Color Family, with Moderate Saturation and Dark brightness. In numbers: rgb(35, 30, 81) (13.7% red, 11.8% green, 31.8% blue), or CMYK 18 / 20 / 0 / 68 for print. Curious how these numbers work? Read our RGB color codes guide.

#231E51 is a confidently colored deep-sea blue 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 almost identical to Paua (#2A2551). Its next-closest registered neighbors are OSS Blue (#1B2450) and Blast Off (#262857).

In RGB terms — rgb(35, 30, 81) — the blue channel does the heavy lifting here. If you plan to put text on a #231E51 background, choose white — the contrast ratio is 15.3:1 (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.

#231E51 color variations

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

#231E51 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 #231E51

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#231E51
  • RGB35, 30, 81
  • CMYK18, 20, 0, 68
  • CSSrgb(35, 30, 81)
  • HSL246°, 46%, 22%
  • HSL Precise245.882°, 45.946%, 21.765%
  • HSV246°, 63%, 32%
  • HSB246°, 63%, 32%
  • Normalized R (0.0–1.0)0.137
  • Normalized G (0.0–1.0)0.118
  • Normalized B (0.0–1.0)0.318
  • GLSLvec3(0.137, 0.118, 0.318)
  • GLSL with alphavec4(0.137, 0.118, 0.318, 1.000)
  • HLSL / Metalfloat3(0.137, 0.118, 0.318)
  • Percentage of Red in RGB13.7%
  • Percentage of Green in RGB11.8%
  • Percentage of Blue in RGB31.8%
  • Color FamilyBlue
  • Saturation FamilyModerate Saturation
  • Lightness FamilyDark
  • HEX ID231E51
  • DECIMAL ID2301521
  • Name LengthThis color has no name
  • Seen by search & AI crawlers7 times
  • Counting from2025-01-01