Information about #12403A color

#12403A color image

Basic facts about this digital color

In the Register's classification, #12403A belongs to the Cyan Color Family, featuring Moderate Saturation and Dark brightness. In numbers: rgb(18, 64, 58) (7.1% red, 25.1% green, 22.7% blue), or CMYK 18 / 0 / 2 / 75 for print. Curious how these numbers work? Read our RGB color codes guide.

#12403A presents itself as a clearly saturated aqua cyan — 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 Stokesian 13 (#164238). Its next-closest registered neighbors are MSU Green (#18453B) and City Limits (#0C3A37).

Technically, the mix leans on its green channel (rgb(18, 64, 58)), which gives #12403A its character. Accessibility-wise, white text works best on #12403A: 11.5:1 contrast (passing WCAG AAA) versus 1.8:1 for black. On paper it relies strongly on black ink (K:75), so proof dark layouts before a large print run. #12403A has no official name yet. If this shade means something to you, you can be the one to name it.

#12403A color variations

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

#12403A 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 #12403A

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

Conversions between color systems and etc.

  • HEX#12403A
  • RGB18, 64, 58
  • CMYK18, 0, 2, 75
  • CSSrgb(18, 64, 58)
  • HSL172°, 56%, 16%
  • HSL Precise172.174°, 56.098%, 16.078%
  • HSV172°, 72%, 25%
  • HSB172°, 72%, 25%
  • Normalized R (0.0–1.0)0.071
  • Normalized G (0.0–1.0)0.251
  • Normalized B (0.0–1.0)0.227
  • GLSLvec3(0.071, 0.251, 0.227)
  • GLSL with alphavec4(0.071, 0.251, 0.227, 1.000)
  • HLSL / Metalfloat3(0.071, 0.251, 0.227)
  • Percentage of Red in RGB7.1%
  • Percentage of Green in RGB25.1%
  • Percentage of Blue in RGB22.7%
  • Color FamilyCyan
  • Saturation FamilyModerate Saturation
  • Lightness FamilyDark
  • HEX ID12403A
  • DECIMAL ID1196090
  • Name LengthThis color has no name
  • Seen by search & AI crawlers9 times
  • Counting from2025-01-01