Information about #212357 color

#212357 color image

Basic facts about this digital color

#212357 falls into the Blue Color Family — Moderate Saturation, Dark brightness. Its exact recipe is rgb(33, 35, 87) — 12.9% red, 13.7% green, 34.1% blue — and for print it converts to CMYK 21 / 20 / 0 / 66. Curious how these numbers work? Read our RGB color codes guide.

The color #212357 reads as a confidently colored deep-sea blue and leans clearly toward the dark side. Expect to see shades like this in dark UI themes, backgrounds and dramatic accents. In The Official Register of Color Names it is a hair away from Blast Off (#262857). Its next-closest registered neighbors are OSS Blue (#1B2450) and Space Cadet (#1D2951).

The recipe behind #212357 is rgb(33, 35, 87), with blue as the dominant ingredient. Accessibility-wise, white text works best on #212357: 14.6:1 contrast (passing WCAG AAA) versus 1.4:1 for black. On paper it relies strongly on black ink (K:66), so proof dark layouts before a large print run. Out of 16,777,216 possible colors, #212357 is still unnamed — it can be claimed and named in The Official Register of Color Names.

#212357 color variations

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

#212357 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 #212357

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#212357
  • RGB33, 35, 87
  • CMYK21, 20, 0, 66
  • CSSrgb(33, 35, 87)
  • HSL238°, 45%, 24%
  • HSL Precise237.778°, 45%, 23.529%
  • HSV238°, 62%, 34%
  • HSB238°, 62%, 34%
  • Normalized R (0.0–1.0)0.129
  • Normalized G (0.0–1.0)0.137
  • Normalized B (0.0–1.0)0.341
  • GLSLvec3(0.129, 0.137, 0.341)
  • GLSL with alphavec4(0.129, 0.137, 0.341, 1.000)
  • HLSL / Metalfloat3(0.129, 0.137, 0.341)
  • Percentage of Red in RGB12.9%
  • Percentage of Green in RGB13.7%
  • Percentage of Blue in RGB34.1%
  • Color FamilyBlue
  • Saturation FamilyModerate Saturation
  • Lightness FamilyDark
  • HEX ID212357
  • DECIMAL ID2171735
  • Name LengthThis color has no name
  • Seen by search & AI crawlers10 times
  • Counting from2025-01-01