What color is #0B3B73?

#0B3B73 is a dark, vivid azure, closest to the named color Tardis Blue. It belongs to the blue family of colors.

What is the RGB value of #0B3B73?

The RGB value is 11, 59, 115: 11 red, 59 green and 115 blue on a 0 to 255 scale.

What is the complementary color of #0B3B73?

The complementary color is #73430B, found by rotating the hue 180° on the color wheel.

Is black or white text better on #0B3B73?

White text. Black text has a contrast ratio of 1.89:1 and white text 11.13:1. WCAG asks for at least 4.5:1 for normal text.

#0B3B73 color

#0B3B73 rgb(11, 59, 115)

Shades of blue

The hex color #0B3B73 is a dark, vivid azure.

In the RGB color model it is made of 4.3% red, 23.1% green and 45.1% blue (11, 59, 115).

Its hue angle is 212°, with 83% saturation and 25% lightness. For print, the CMYK equivalent is 90% cyan, 49% magenta, 0% yellow and 55% black.

The closest named color is Tardis Blue (#003B6F), a difference of 1.3 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 11.13:1).

#0B3B73 color codes

HEX	`#0B3B73`
RGB	`rgb(11, 59, 115)`
RGB percent	`rgb(4.3%, 23.1%, 45.1%)`
HSL	`hsl(212, 83%, 25%)`
HSV / HSB	`hsv(212, 90%, 45%)`
CMYK	`cmyk(90%, 49%, 0%, 55%)`
CIE LAB	`lab(25.06, 7.75, -36.51)`
CIE LCH	`lch(25.06, 37.33, 281.99)`
CIE XYZ	`xyz(4.795, 4.436, 16.82)`
Decimal	`736115`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #0B3B73, based on their position on the color wheel.

Complementary

The color opposite on the color wheel (180°). Strongest contrast.

Analogous

Neighbors 30° either side. Calm, natural combinations.

Split complementary

The two colors next to the complement (150° and 210°).

Triadic

Three colors evenly spaced, 120° apart.

Tetradic (square)

Four colors 90° apart.

Shades, tints and tones

Shades (darker, mixed with black)

Tints (lighter, mixed with white)

Tones (mixed with gray)

Contrast and accessibility

Text on #0B3B73	Ratio	AA	AAA	AA large
Sample text	1.89:1	Fail	Fail	Fail
Sample text	11.13:1	Pass	Pass	Pass

#0B3B73 as text on	Ratio	AA	AAA	AA large
Sample text	11.13:1	Pass	Pass	Pass
Sample text	1.89:1	Fail	Fail	Fail

WCAG 2 asks for 4.5:1 for normal text (AA), 7:1 for AAA, and 3:1 for large text. Check other pairs.

Color blindness simulation

How #0B3B73 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #0b3b73; }
.text { color: #0b3b73; }
.border { border: 2px solid #0b3b73; }
.transparent { background-color: rgb(11 59 115 / 50%); }
.gradient { background: linear-gradient(to right, #0b3b73, #0f0b73); }

Background

Text color

Border

Similar colors

Closest common color name: Prussian Blue.

Questions

What color is #0B3B73?: #0B3B73 is a dark, vivid azure, closest to the named color Tardis Blue. It belongs to the blue family of colors.
What is the RGB value of #0B3B73?: The RGB value is 11, 59, 115: 11 red, 59 green and 115 blue on a 0 to 255 scale.
What is the complementary color of #0B3B73?: The complementary color is #73430B, found by rotating the hue 180° on the color wheel.
Is black or white text better on #0B3B73?: White text. Black text has a contrast ratio of 1.89:1 and white text 11.13:1. WCAG asks for at least 4.5:1 for normal text.