Information about #1B1D3A color

#1B1D3A color image

Basic facts about this digital color

#1B1D3A falls into the Blue Color Family — Mild Saturation, Dark brightness. Its exact recipe is rgb(27, 29, 58) — 10.6% red, 11.4% green, 22.7% blue — and for print it converts to CMYK 12 / 11 / 0 / 77. Curious how these numbers work? Read our RGB color codes guide.

The color #1B1D3A reads as a moderately toned classic 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 Nite Life (#1D2134). Its next-closest registered neighbors are Surfs Up (#1F2142) and Blue Night (#1F263B).

The recipe behind #1B1D3A is rgb(27, 29, 58), with blue as the dominant ingredient. Accessibility-wise, white text works best on #1B1D3A: 16.4:1 contrast (passing WCAG AAA) versus 1.3:1 for black. On paper it relies strongly on black ink (K:77), so proof dark layouts before a large print run. #1B1D3A has no official name yet. If this shade means something to you, you can be the one to name it.

#1B1D3A color variations

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

#1B1D3A 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 #1B1D3A

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

Nite Life color link
Nite Life

#1D2134

Surfs Up color link
Surfs Up

#1F2142

Blue Night color link
Blue Night

#1F263B

Dark color link
Dark

#1B2431

Yankees Blue color link
Yankees Blue

#1C2841

Sonic Boom color link
Sonic Boom

#252042

Bullitt color link
Bullitt

#27253C

Magnum color link
Magnum

#112331

Indian Ink color link
Indian Ink

#232732

Daytona color link
Daytona

#1E222C

Conversions between color systems and etc.

  • HEX#1B1D3A
  • RGB27, 29, 58
  • CMYK12, 11, 0, 77
  • CSSrgb(27, 29, 58)
  • HSL236°, 36%, 17%
  • HSL Precise236.129°, 36.471%, 16.667%
  • HSV236°, 53%, 23%
  • HSB236°, 53%, 23%
  • Normalized R (0.0–1.0)0.106
  • Normalized G (0.0–1.0)0.114
  • Normalized B (0.0–1.0)0.227
  • GLSLvec3(0.106, 0.114, 0.227)
  • GLSL with alphavec4(0.106, 0.114, 0.227, 1.000)
  • HLSL / Metalfloat3(0.106, 0.114, 0.227)
  • Percentage of Red in RGB10.6%
  • Percentage of Green in RGB11.4%
  • Percentage of Blue in RGB22.7%
  • Color FamilyBlue
  • Saturation FamilyMild Saturation
  • Lightness FamilyDark
  • HEX ID1B1D3A
  • DECIMAL ID1776954
  • Name LengthThis color has no name
  • Seen by search & AI crawlers33 times
  • Counting from2025-01-01