Information about #243C51 color

#243C51 color image

Basic facts about this digital color

In the Register's classification, #243C51 belongs to the Azure Color Family, featuring Mild Saturation and Dark brightness. In numbers: rgb(36, 60, 81) (14.1% red, 23.5% green, 31.8% blue), or CMYK 18 / 8 / 0 / 68 for print. Curious how these numbers work? Read our RGB color codes guide.

#243C51 presents itself as a softly balanced steel-blue azure — one that leans clearly toward the dark side. It is a natural fit for dark UI themes, backgrounds and dramatic accents. In The Official Register of Color Names it is almost identical to Nile Blue (#253F4E). Its next-closest registered neighbors are Midnight Oil (#283854) and Dark Blue Grey (#1F3B4D).

The recipe behind #243C51 is rgb(36, 60, 81), with blue as the dominant ingredient. Accessibility-wise, white text works best on #243C51: 11.4:1 contrast (passing WCAG AAA) versus 1.8:1 for black. On paper it relies strongly on black ink (K:68), so proof dark layouts before a large print run. Out of 16,777,216 possible colors, #243C51 is still unnamed — it can be claimed and named in The Official Register of Color Names.

#243C51 color variations

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

#243C51 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 #243C51

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

Nile Blue color link
Nile Blue

#253F4E

Midnight Oil color link
Midnight Oil

#283854

Regal Blue color link
Regal Blue

#203F58

Tarawera color link
Tarawera

#253C48

Dark Azure color link
Dark Azure

#274059

Blue Clouds color link
Blue Clouds

#273C5A

Madison color link
Madison

#2D3C54

Vintage Navy color link
Vintage Navy

#2A344D

Ares blue color link
Ares blue

#2D4255

Conversions between color systems and etc.

  • HEX#243C51
  • RGB36, 60, 81
  • CMYK18, 8, 0, 68
  • CSSrgb(36, 60, 81)
  • HSL208°, 38%, 23%
  • HSL Precise208°, 38.462%, 22.941%
  • HSV208°, 56%, 32%
  • HSB208°, 56%, 32%
  • Normalized R (0.0–1.0)0.141
  • Normalized G (0.0–1.0)0.235
  • Normalized B (0.0–1.0)0.318
  • GLSLvec3(0.141, 0.235, 0.318)
  • GLSL with alphavec4(0.141, 0.235, 0.318, 1.000)
  • HLSL / Metalfloat3(0.141, 0.235, 0.318)
  • Percentage of Red in RGB14.1%
  • Percentage of Green in RGB23.5%
  • Percentage of Blue in RGB31.8%
  • Color FamilyAzure
  • Saturation FamilyMild Saturation
  • Lightness FamilyDark
  • HEX ID243C51
  • DECIMAL ID2374737
  • Name LengthThis color has no name
  • Seen by search & AI crawlers22 times
  • Counting from2025-01-01