Information about #5B5B5B color

#5B5B5B color image

Basic facts about this digital color

#5B5B5B falls into the Greyscale Color Family — Desaturated, Neutral brightness. Its exact recipe is rgb(91, 91, 91) — 35.7% red, 35.7% green, 35.7% blue — and for print it converts to CMYK 0 / 0 / 0 / 64. New to color codes? See our guide to RGB color codes.

#5B5B5B is a softly muted balanced grey tone that occupies the middle of the lightness scale. In practice it works well for versatile mid-ground roles, from cards to secondary buttons. In The Official Register of Color Names it is practically indistinguishable from Tinpan Alley (#5C5B59). Slightly further away sit Quarter Fuscous Grey (#595A5E) and Gray Dolphin (#5C5858).

Under the hood all three RGB channels are equal (91 each), placing #5B5B5B exactly on the neutral axis of the color space. Accessibility-wise, white text works best on #5B5B5B: 6.8:1 contrast (passing WCAG AA) versus 3.1:1 for black. For print, note the heavy black component (K:64) — ink coverage matters with tones this deep. This shade is reserved in the Register and is not available for naming.

#5B5B5B color variations

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

Why this page shows fewer blocks

#5B5B5B 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 #5B5B5B

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

Conversions between color systems and etc.

  • HEX#5B5B5B
  • RGB91, 91, 91
  • CMYK0, 0, 0, 64
  • CSSrgb(91, 91, 91)
  • HSL0°, 0%, 36%
  • HSL Precise0°, 0%, 35.686%
  • HSV0°, 0%, 36%
  • HSB0°, 0%, 36%
  • Normalized R (0.0–1.0)0.357
  • Normalized G (0.0–1.0)0.357
  • Normalized B (0.0–1.0)0.357
  • GLSLvec3(0.357, 0.357, 0.357)
  • GLSL with alphavec4(0.357, 0.357, 0.357, 1.000)
  • HLSL / Metalfloat3(0.357, 0.357, 0.357)
  • Percentage of Red in RGB35.7%
  • Percentage of Green in RGB35.7%
  • Percentage of Blue in RGB35.7%
  • Color FamilyGreyscale
  • Saturation FamilyDesaturated
  • Lightness FamilyNeutral
  • HEX ID5B5B5B
  • DECIMAL ID5987163
  • Name LengthThis color has no name
  • Seen by search & AI crawlers42 times
  • Counting from2025-01-01