#404040 Color (Hex and RGB)

#404040

rgb(64 64 64) · reads as gray

#404040 has RGB values (64, 64, 64). The color reads primarily as gray in sRGB space.

Color values

Format	Value	Channels
HEX	`#404040`	R40G40B40
RGB	`rgb(64 64 64)`	R64G64B64
HSL	`hsl(0 0% 25%)`	H0°S0%L25%
OKLCH	`oklch(37% 0 90)`	L0.37C0H90°
HSV	`hsv(0, 0%, 25%)`	H0°S0%V25%
CMYK	`cmyk(0%, 0%, 0%, 75%)`	C0%M0%Y0%K75%

RGB mix

Red64 25.1%
Green64 25.1%
Blue64 25.1%

Base numbers

Base	R	G	B
Binary	`01000000`	`01000000`	`01000000`
Octal	`100`	`100`	`100`
Decimal	`64`	`64`	`64`
Hex	`40`	`40`	`40`

Shades & tints

Shades mix #404040 with black; tints mix it with white. Click any swatch to explore it.

Shades

Tints

Color harmonies

Complementary

Opposite on the color wheel — maximum contrast.

Analogous

Neighbors 30° either side — calm and cohesive.

Triadic

Three hues spaced 120° apart — vibrant balance.

Monochromatic

Same hue and saturation, different lightness.

Similar brand colors

The closest colors from our brand palettes, measured in OKLab.

Contrast & accessibility

WCAG 2.1 contrast against white and black. Test other pairs in the contrast checker.

#404040 on #FFFFFF

10.37:1

AA ✓AAA ✓AA Large ✓AAA Large ✓

#404040 on #000000

2.03:1

AA ✕AAA ✕AA Large ✕AAA Large ✕

#FFFFFF on #404040