Information about #153B57 color

#153B57 color image

Basic facts about this digital color

In the Register's classification, #153B57 belongs to the Azure Color Family, featuring High Saturation and Dark brightness. In numbers: rgb(21, 59, 87) (8.2% red, 23.1% green, 34.1% blue), or CMYK 26 / 11 / 0 / 66 for print. Curious how these numbers work? Read our RGB color codes guide.

#153B57 presents itself as a strongly colored sky-leaning azure — one 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 Nationalist Blue (#174358). Its next-closest registered neighbors are Cello (#1E385B) and Regal Blue (#203F58).

Technically, the mix leans on its blue channel (rgb(21, 59, 87)), which gives #153B57 its character. If you plan to put text on a #153B57 background, choose white — the contrast ratio is 11.7:1 (passing WCAG AAA), while black manages only 1.8:1. On paper it relies strongly on black ink (K:66), so proof dark layouts before a large print run. No one has named #153B57 so far. Register a name for it and it becomes a permanent record.

#153B57 color variations

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

#153B57 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 #153B57

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

Cello color link
Cello

#1E385B

Regal Blue color link
Regal Blue

#203F58

Barometer color link
Barometer

#11394C

Biscay color link
Biscay

#1B3162

Shipshape color link
Shipshape

#21425F

Delft Blue color link
Delft Blue

#1F305E

Apollo Blue color link
Apollo Blue

#163968

Conversions between color systems and etc.

  • HEX#153B57
  • RGB21, 59, 87
  • CMYK26, 11, 0, 66
  • CSSrgb(21, 59, 87)
  • HSL205°, 61%, 21%
  • HSL Precise205.455°, 61.111%, 21.176%
  • HSV205°, 76%, 34%
  • HSB205°, 76%, 34%
  • Normalized R (0.0–1.0)0.082
  • Normalized G (0.0–1.0)0.231
  • Normalized B (0.0–1.0)0.341
  • GLSLvec3(0.082, 0.231, 0.341)
  • GLSL with alphavec4(0.082, 0.231, 0.341, 1.000)
  • HLSL / Metalfloat3(0.082, 0.231, 0.341)
  • Percentage of Red in RGB8.2%
  • Percentage of Green in RGB23.1%
  • Percentage of Blue in RGB34.1%
  • Color FamilyAzure
  • Saturation FamilyHigh Saturation
  • Lightness FamilyDark
  • HEX ID153B57
  • DECIMAL ID1391447
  • Name LengthThis color has no name
  • Seen by search & AI crawlers8 times
  • Counting from2025-01-01