#636363 Color (Hex and RGB)

#636363

rgb(99 99 99) · reads as gray

#636363 has RGB values (99, 99, 99). The color reads primarily as gray in sRGB space.

Color values

Format	Value	Channels
HEX	`#636363`	R63G63B63
RGB	`rgb(99 99 99)`	R99G99B99
HSL	`hsl(0 0% 39%)`	H0°S0%L39%
OKLCH	`oklch(50% 0 90)`	L0.5C0H90°
HSV	`hsv(0, 0%, 39%)`	H0°S0%V39%
CMYK	`cmyk(0%, 0%, 0%, 61%)`	C0%M0%Y0%K61%

RGB mix

Red99 38.82%
Green99 38.82%
Blue99 38.82%

Base numbers

Base	R	G	B
Binary	`01100011`	`01100011`	`01100011`
Octal	`143`	`143`	`143`
Decimal	`99`	`99`	`99`
Hex	`63`	`63`	`63`

Shades & tints

Shades mix #636363 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.

#636363 on #FFFFFF

6.01:1

AA ✓AAA ✕AA Large ✓AAA Large ✓

#636363 on #000000

3.50:1

AA ✕AAA ✕AA Large ✓AAA Large ✕

#FFFFFF on #636363