Information about #1B3F64 color

#1B3F64 color image

Basic facts about this digital color

The digital color #1B3F64 is classified in the Register under the Azure Color Family, with Moderate Saturation and Dark brightness. In numbers: rgb(27, 63, 100) (10.6% red, 24.7% green, 39.2% blue), or CMYK 29 / 15 / 0 / 61 for print. Curious how these numbers work? Read our RGB color codes guide.

The color #1B3F64 reads as a confidently colored azure and carries a shadowy depth. Expect to see shades like this in night-mode interfaces and high-contrast pairings with light text. In The Official Register of Color Names it is practically indistinguishable from Shipshape (#21425F). Nearby in the Register you will also find Into The Blue (#193766) and Apollo Blue (#163968).

In RGB terms — rgb(27, 63, 100) — the blue channel does the heavy lifting here. If you plan to put text on a #1B3F64 background, choose white — the contrast ratio is 10.8:1 (passing WCAG AAA), while black manages only 1.9:1. For print, note the heavy black component (K:61) — ink coverage matters with tones this deep. #1B3F64 has no official name yet. If this shade means something to you, you can be the one to name it.

#1B3F64 color variations

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

#1B3F64 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 #1B3F64

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

Shipshape color link
Shipshape

#21425F

Apollo Blue color link
Apollo Blue

#163968

Cello color link
Cello

#1E385B

Regal Blue color link
Regal Blue

#203F58

Biscay color link
Biscay

#1B3162

Guru color link
Guru

#154C65

Blue Clouds color link
Blue Clouds

#273C5A

Dark Azure color link
Dark Azure

#274059

Confidante color link
Confidante

#233167

Conversions between color systems and etc.

  • HEX#1B3F64
  • RGB27, 63, 100
  • CMYK29, 15, 0, 61
  • CSSrgb(27, 63, 100)
  • HSL210°, 57%, 25%
  • HSL Precise210.411°, 57.48%, 24.902%
  • HSV210°, 73%, 39%
  • HSB210°, 73%, 39%
  • Normalized R (0.0–1.0)0.106
  • Normalized G (0.0–1.0)0.247
  • Normalized B (0.0–1.0)0.392
  • GLSLvec3(0.106, 0.247, 0.392)
  • GLSL with alphavec4(0.106, 0.247, 0.392, 1.000)
  • HLSL / Metalfloat3(0.106, 0.247, 0.392)
  • Percentage of Red in RGB10.6%
  • Percentage of Green in RGB24.7%
  • Percentage of Blue in RGB39.2%
  • Color FamilyAzure
  • Saturation FamilyModerate Saturation
  • Lightness FamilyDark
  • HEX ID1B3F64
  • DECIMAL ID1785700
  • Name LengthThis color has no name
  • Seen by search & AI crawlers14 times
  • Counting from2025-01-01