Blue color: hex codes, shades and palettes

Palettes built around blue. Click any swatch to copy its hex code.

Blue is #0000FF — vivid blue. Below are its shades with hex codes, the values in every common format, and blue color palettes to copy.

Blue hex, RGB, HSL and OKLCH

#0000FF
HEX
#0000FF
RGB
rgb(0, 0, 255)
HSL
hsl(240, 100%, 50%)
OKLCH
oklch(45.2% 0.313 264.1)
On white
8.59:1
On black
2.44:1

Shades of blue

Eleven steps from one base color, generated in OKLCH so each step is an equal perceived step rather than an equal numeric one. Click a swatch to copy it.

Contrast and readability

Blue on white measures 8.59:1 and on black 2.44:1. WCAG AA asks for 4.5:1 on normal text and 3:1 on large text and UI components, so the higher of those two decides which background it belongs on. In the scale above, 500 is the first to clear 4.5:1 on white, at 5.70:1.

The contrast checker reports every level for a given pair and suggests the nearest passing shade on the same hue. The color picker builds this same scale from any color you paste in.

Related colors:navy, royal blue, cobalt, periwinkle, transparent blue, steel blue. See every shade on the colors index.