#a9a9a9

darkgray / darkgrey

Color values Color notations — HEX (hexadecimal), RGB (light primaries), HSL (hue/saturation/lightness), CMYK (print inks, approximate).

HEX
#a9a9a9
RGB
rgb(169, 169, 169)
HSL
hsl(0, 0%, 66%)
OKLCH
oklch(73.5% 0 0)
CMYK
0% 0% 0% 34%
Relative luminance Relative luminance: a color's brightness from 0 (black) to 1 (white). It is used to compute WCAG contrast.
0.3968
Hue Hue: the kind of a color (red, orange, yellow…). We group the hue wheel into 12 sectors.
Achromatic
CSS color name
darkgray / darkgrey

Contrast

Ratio Contrast ratio: the brightness difference between two colors, from 1:1 to 21:1. Higher is easier to read. APCA (Lc) APCA: a newer perceptual contrast measure from the WCAG 3 draft. Lc runs about 0–106; higher is easier to read. The sign shows polarity (dark text on light, or light on dark).
As background
White text 2.35:1 -51
Black text 8.94:1 58
As text
White background 2.35:1 46
Black background 8.94:1 -56

Color harmonies

Tone scale Tone scale: five steps that keep the hue but vary the lightness.

Shades & tints Shades & tints: lighter steps mixed toward white (tints) and darker steps mixed toward black (shades).

Impressions Impression: a tag for the mood a color evokes — warm, calm, vivid and so on.

Usage preview

As background (black text)

Ratio 8.94:1 APCA (Lc) 58

As background (white text)

Ratio 2.35:1 APCA (Lc) -51

As text (white background)

Ratio 2.35:1 APCA (Lc) 46

As text (black background)

Ratio 8.94:1 APCA (Lc) -56