#0F172A Color (Hex and RGB)

#0F172A

rgb(15 23 42) · reads as blue

#0f172a has RGB values (15, 23, 42). The color reads primarily as blue in sRGB space.

Color values

Format	Value	Channels
HEX	`#0F172A`	R0FG17B2A
RGB	`rgb(15 23 42)`	R15G23B42
HSL	`hsl(222 47% 11%)`	H222°S47%L11%
OKLCH	`oklch(21% 0.04 266)`	L0.21C0.04H266°
HSV	`hsv(222, 64%, 16%)`	H222°S64%V16%
CMYK	`cmyk(64%, 45%, 0%, 84%)`	C64%M45%Y0%K84%

RGB mix

Red15 5.88%
Green23 9.02%
Blue42 16.47%

Base numbers

Base	R	G	B
Binary	`00001111`	`00010111`	`00101010`
Octal	`17`	`27`	`52`
Decimal	`15`	`23`	`42`
Hex	`0f`	`17`	`2a`

Shades & tints

Shades mix #0F172A 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.

#0F172A on #FFFFFF

17.85:1

AA ✓AAA ✓AA Large ✓AAA Large ✓

#0F172A on #000000

1.18:1

AA ✕AAA ✕AA Large ✕AAA Large ✕

#FFFFFF on #0F172A