Information about #3F3F40 color

#3F3F40 color image

Basic facts about this digital color

In the Register's classification, #3F3F40 belongs to the Blue Color Family, featuring Desaturated and Dark brightness. The mix behind it: rgb(63, 63, 64) — 24.7% red, 24.7% green, 25.1% blue; the print equivalent is CMYK 0 / 0 / 0 / 75. Curious how these numbers work? Read our RGB color codes guide.

#3F3F40 is a quiet, subdued grey 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 Gravity (#3D4040). Nearby in the Register you will also find Baltic Sea (#3C3D3E) and Charcoal Grey (#3C4142).

In RGB terms — rgb(63, 63, 64) — the blue channel does the heavy lifting here. If you plan to put text on a #3F3F40 background, choose white — the contrast ratio is 10.5:1 (passing WCAG AAA), while black manages only 2.0:1. For print, note the heavy black component (K:75) — ink coverage matters with tones this deep. #3F3F40 has no official name yet. If this shade means something to you, you can be the one to name it.

#3F3F40 color variations

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

#3F3F40 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 #3F3F40

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

Gravity color link
Gravity

#3D4040

Baltic Sea color link
Baltic Sea

#3C3D3E

Windswept color link
Windswept

#434141

Half Foundry color link
Half Foundry

#3E4145

Fuscous Grey color link
Fuscous Grey

#3C3B3C

Ship Grey color link
Ship Grey

#3E3A44

Rockstar color link
Rockstar

#3D3A3C

Charade color link
Charade

#394043

Iridium color link
Iridium

#3D3C3A

Conversions between color systems and etc.

  • HEX#3F3F40
  • RGB63, 63, 64
  • CMYK0, 0, 0, 75
  • CSSrgb(63, 63, 64)
  • HSL240°, 1%, 25%
  • HSL Precise240°, 0.787%, 24.902%
  • HSV240°, 2%, 25%
  • HSB240°, 2%, 25%
  • Normalized R (0.0–1.0)0.247
  • Normalized G (0.0–1.0)0.247
  • Normalized B (0.0–1.0)0.251
  • GLSLvec3(0.247, 0.247, 0.251)
  • GLSL with alphavec4(0.247, 0.247, 0.251, 1.000)
  • HLSL / Metalfloat3(0.247, 0.247, 0.251)
  • Percentage of Red in RGB24.7%
  • Percentage of Green in RGB24.7%
  • Percentage of Blue in RGB25.1%
  • Color FamilyBlue
  • Saturation FamilyDesaturated
  • Lightness FamilyDark
  • HEX ID3F3F40
  • DECIMAL ID4144960
  • Name LengthThis color has no name
  • Seen by search & AI crawlers339 times
  • Counting from2025-01-01