Information about #1B4D64 color

#1B4D64 color image

Basic facts about this digital color

#1B4D64 falls into the Azure Color Family — Moderate Saturation, Dark brightness. Its exact recipe is rgb(27, 77, 100) — 10.6% red, 30.2% green, 39.2% blue — and for print it converts to CMYK 29 / 9 / 0 / 61. New to color codes? See our guide to RGB color codes.

#1B4D64 is a confidently colored steel-blue azure that leans clearly toward the dark side. In practice it works well for dark UI themes, backgrounds and dramatic accents. In The Official Register of Color Names it is practically indistinguishable from Guru (#154C65). Its next-closest registered neighbors are JayHawk Blue (#194F6E) and Shipshape (#21425F).

In RGB terms — rgb(27, 77, 100) — the blue channel does the heavy lifting here. Accessibility-wise, white text works best on #1B4D64: 9.2:1 contrast (passing WCAG AAA) versus 2.3:1 for black. On paper it relies strongly on black ink (K:61), so proof dark layouts before a large print run. Out of 16,777,216 possible colors, #1B4D64 is still unnamed — it can be claimed and named in The Official Register of Color Names.

#1B4D64 color variations

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

#1B4D64 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 #1B4D64

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

Guru color link
Guru

#154C65

JayHawk Blue color link
JayHawk Blue

#194F6E

Shipshape color link
Shipshape

#21425F

Wanaka color link
Wanaka

#284962

Arapawa color link
Arapawa

#274A5D

Retro color link
Retro

#1B5256

Beatnik color link
Beatnik

#1F4F54

Conversions between color systems and etc.

  • HEX#1B4D64
  • RGB27, 77, 100
  • CMYK29, 9, 0, 61
  • CSSrgb(27, 77, 100)
  • HSL199°, 57%, 25%
  • HSL Precise198.904°, 57.48%, 24.902%
  • HSV199°, 73%, 39%
  • HSB199°, 73%, 39%
  • Normalized R (0.0–1.0)0.106
  • Normalized G (0.0–1.0)0.302
  • Normalized B (0.0–1.0)0.392
  • GLSLvec3(0.106, 0.302, 0.392)
  • GLSL with alphavec4(0.106, 0.302, 0.392, 1.000)
  • HLSL / Metalfloat3(0.106, 0.302, 0.392)
  • Percentage of Red in RGB10.6%
  • Percentage of Green in RGB30.2%
  • Percentage of Blue in RGB39.2%
  • Color FamilyAzure
  • Saturation FamilyModerate Saturation
  • Lightness FamilyDark
  • HEX ID1B4D64
  • DECIMAL ID1789284
  • Name LengthThis color has no name
  • Seen by search & AI crawlers31 times
  • Counting from2025-01-01