Information about #213F54 color

#213F54 color image

Basic facts about this digital color

In the Register's classification, #213F54 belongs to the Azure Color Family, featuring Moderate Saturation and Dark brightness. In numbers: rgb(33, 63, 84) (12.9% red, 24.7% green, 32.9% blue), or CMYK 20 / 8 / 0 / 67 for print. Curious how these numbers work? Read our RGB color codes guide.

#213F54 presents itself as a confidently colored steel-blue azure — one that carries a shadowy depth. 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 Regal Blue (#203F58). Nearby in the Register you will also find Nile Blue (#253F4E) and Astronaut Blue (#214559).

The recipe behind #213F54 is rgb(33, 63, 84), with blue as the dominant ingredient. If you plan to put text on a #213F54 background, choose white — the contrast ratio is 11.0:1 (passing WCAG AAA), while black manages only 1.9:1. On paper it relies strongly on black ink (K:67), so proof dark layouts before a large print run. #213F54 has no official name yet. If this shade means something to you, you can be the one to name it.

#213F54 color variations

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

#213F54 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 #213F54

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

Regal Blue color link
Regal Blue

#203F58

Nile Blue color link
Nile Blue

#253F4E

Dark Azure color link
Dark Azure

#274059

Blue Clouds color link
Blue Clouds

#273C5A

Midnight Oil color link
Midnight Oil

#283854

Cello color link
Cello

#1E385B

Shipshape color link
Shipshape

#21425F

Madison color link
Madison

#2D3C54

Conversions between color systems and etc.

  • HEX#213F54
  • RGB33, 63, 84
  • CMYK20, 8, 0, 67
  • CSSrgb(33, 63, 84)
  • HSL205°, 44%, 23%
  • HSL Precise204.706°, 43.59%, 22.941%
  • HSV205°, 61%, 33%
  • HSB205°, 61%, 33%
  • Normalized R (0.0–1.0)0.129
  • Normalized G (0.0–1.0)0.247
  • Normalized B (0.0–1.0)0.329
  • GLSLvec3(0.129, 0.247, 0.329)
  • GLSL with alphavec4(0.129, 0.247, 0.329, 1.000)
  • HLSL / Metalfloat3(0.129, 0.247, 0.329)
  • Percentage of Red in RGB12.9%
  • Percentage of Green in RGB24.7%
  • Percentage of Blue in RGB32.9%
  • Color FamilyAzure
  • Saturation FamilyModerate Saturation
  • Lightness FamilyDark
  • HEX ID213F54
  • DECIMAL ID2178900
  • Name LengthThis color has no name
  • Seen by search & AI crawlers20 times
  • Counting from2025-01-01