Information about #1B3F3F color

#1B3F3F color image

Basic facts about this digital color

In the Register's classification, #1B3F3F belongs to the Cyan Color Family, featuring Mild Saturation and Dark brightness. The mix behind it: rgb(27, 63, 63) — 10.6% red, 24.7% green, 24.7% blue; the print equivalent is CMYK 14 / 0 / 0 / 75. Curious how these numbers work? Read our RGB color codes guide.

#1B3F3F is a mildly saturated aqua cyan 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 a hair away from Tiber (#184343). Nearby in the Register you will also find Nordic (#1D393C) and MSU Green (#18453B).

The recipe behind #1B3F3F is rgb(27, 63, 63), with green as the dominant ingredient. If you plan to put text on a #1B3F3F background, choose white — the contrast ratio is 11.5:1 (passing WCAG AAA), while black manages only 1.8:1. For print, note the heavy black component (K:75) — ink coverage matters with tones this deep. Out of 16,777,216 possible colors, #1B3F3F is still unnamed — it can be claimed and named in The Official Register of Color Names.

#1B3F3F color variations

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

#1B3F3F 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 #1B3F3F

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

Tiber color link
Tiber

#184343

Nordic color link
Nordic

#1D393C

MSU Green color link
MSU Green

#18453B

Tiki Tour color link
Tiki Tour

#234040

Stokesian 13 color link
Stokesian 13

#164238

Zydeco color link
Zydeco

#20483F

Tile Green color link
Tile Green

#26433A

Elephant color link
Elephant

#243640

Tarawera color link
Tarawera

#253C48

Conversions between color systems and etc.

  • HEX#1B3F3F
  • RGB27, 63, 63
  • CMYK14, 0, 0, 75
  • CSSrgb(27, 63, 63)
  • HSL180°, 40%, 18%
  • HSL Precise180°, 40%, 17.647%
  • HSV180°, 57%, 25%
  • HSB180°, 57%, 25%
  • Normalized R (0.0–1.0)0.106
  • Normalized G (0.0–1.0)0.247
  • Normalized B (0.0–1.0)0.247
  • GLSLvec3(0.106, 0.247, 0.247)
  • GLSL with alphavec4(0.106, 0.247, 0.247, 1.000)
  • HLSL / Metalfloat3(0.106, 0.247, 0.247)
  • Percentage of Red in RGB10.6%
  • Percentage of Green in RGB24.7%
  • Percentage of Blue in RGB24.7%
  • Color FamilyCyan
  • Saturation FamilyMild Saturation
  • Lightness FamilyDark
  • HEX ID1B3F3F
  • DECIMAL ID1785663
  • Name LengthThis color has no name
  • This page visited3 times
  • Counting from2025-01-01