#64748B Color (Hex and RGB)

#64748B

rgb(100 116 139) · reads as blue

#64748b has RGB values (100, 116, 139). The color reads primarily as blue in sRGB space.

Color values

Format	Value	Channels
HEX	`#64748B`	R64G74B8B
RGB	`rgb(100 116 139)`	R100G116B139
HSL	`hsl(215 16% 47%)`	H215°S16%L47%
OKLCH	`oklch(55% 0.04 257)`	L0.55C0.04H257°
HSV	`hsv(215, 28%, 55%)`	H215°S28%V55%
CMYK	`cmyk(28%, 17%, 0%, 45%)`	C28%M17%Y0%K45%

RGB mix

Red100 39.22%
Green116 45.49%
Blue139 54.51%

Base numbers

Base	R	G	B
Binary	`01100100`	`01110100`	`10001011`
Octal	`144`	`164`	`213`
Decimal	`100`	`116`	`139`
Hex	`64`	`74`	`8b`

Shades & tints

Shades mix #64748B 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.

#64748B on #FFFFFF

4.76:1

AA ✓AAA ✕AA Large ✓AAA Large ✓

#64748B on #000000

4.41:1

AA ✕AAA ✕AA Large ✓AAA Large ✕

#FFFFFF on #64748B