Information about #3B3B3B color

#3B3B3B color image

Basic facts about this digital color

#3B3B3B falls into the Greyscale Color Family — Desaturated, Dark brightness. Its exact recipe is rgb(59, 59, 59) — 23.1% red, 23.1% green, 23.1% blue — and for print it converts to CMYK 0 / 0 / 0 / 77. New to color codes? See our guide to RGB color codes.

The color #3B3B3B reads as a muted, almost neutral grey and stays on the darker end of the scale. Designers typically reach for tones like this for dark UI themes, backgrounds and dramatic accents. In The Official Register of Color Names it is a hair away from Fuscous Grey (#3C3B3C). Slightly further away sit Double Gravel (#3A3C39) and Rockstar (#3D3A3C).

Technically, #3B3B3B is a perfectly balanced RGB mix — red, green and blue all sit at 59, which is what makes it a true neutral. Accessibility-wise, white text works best on #3B3B3B: 11.2:1 contrast (passing WCAG AAA) versus 1.9:1 for black. On paper it relies strongly on black ink (K:77), so proof dark layouts before a large print run. This shade is reserved in the Register and is not available for naming.

#3B3B3B color variations

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

Why this page shows fewer blocks

#3B3B3B belongs to the Greyscale Color Family, and greyscale colors have no hue. Hue is an angle on the color wheel, and that angle only exists when a color leans toward one primary more than the others. Here all three channels are equal (R = G = B), so there is nothing to lean and no angle to measure.

Everything built on rotating that angle therefore has nothing to rotate. A complementary color is the hue 180° away — for a grey, that is the same grey. The same goes for analogous, triadic, tetradic and square harmonies. Rather than show seven identical swatches, the register leaves the Hues variation strip and the whole Harmonies section out.

What remains is everything that depends on lightness rather than hue. Tints, shades and tones still work, because they move the color up and down the scale instead of around the wheel. So do the nearest named colors, the conversions and the adjacent color codes.

How the register classifies colors · All greyscale colors in the register

Nearest named colors to #3B3B3B

The closest officially registered color names in the Register, ordered by similarity.

Fuscous Grey color link
Fuscous Grey

#3C3B3C

Rockstar color link
Rockstar

#3D3A3C

Iridium color link
Iridium

#3D3C3A

Zeus color link
Zeus

#3B3C38

Baltic Sea color link
Baltic Sea

#3C3D3E

Black Sheep color link
Black Sheep

#3E393A

Atom color link
Atom

#373A3C

Eclipse color link
Eclipse

#3F3939

Possessed color link
Possessed

#373B38

Black Olive color link
Black Olive

#3B3C36

Conversions between color systems and etc.

  • HEX#3B3B3B
  • RGB59, 59, 59
  • CMYK0, 0, 0, 77
  • CSSrgb(59, 59, 59)
  • HSL0°, 0%, 23%
  • HSL Precise0°, 0%, 23.137%
  • HSV0°, 0%, 23%
  • HSB0°, 0%, 23%
  • Normalized R (0.0–1.0)0.231
  • Normalized G (0.0–1.0)0.231
  • Normalized B (0.0–1.0)0.231
  • GLSLvec3(0.231, 0.231, 0.231)
  • GLSL with alphavec4(0.231, 0.231, 0.231, 1.000)
  • HLSL / Metalfloat3(0.231, 0.231, 0.231)
  • Percentage of Red in RGB23.1%
  • Percentage of Green in RGB23.1%
  • Percentage of Blue in RGB23.1%
  • Color FamilyGreyscale
  • Saturation FamilyDesaturated
  • Lightness FamilyDark
  • HEX ID3B3B3B
  • DECIMAL ID3881787
  • Name LengthThis color has no name
  • This page visited4 times
  • Counting from2025-01-01