What color is #0047AB?

#0047AB is a dark, vivid azure known as Cobalt Blue. It belongs to the blue family of colors.

What is the RGB value of Cobalt Blue?

The RGB value is 0, 71, 171: 0 red, 71 green and 171 blue on a 0 to 255 scale.

What is the complementary color of Cobalt Blue?

The complementary color is #AB6400, found by rotating the hue 180° on the color wheel.

Is black or white text better on #0047AB?

White text. Black text has a contrast ratio of 2.49:1 and white text 8.44:1. WCAG asks for at least 4.5:1 for normal text.

Cobalt Blue color: hex code #0047AB

#0047AB rgb(0, 71, 171)

Shades of blue

Cobalt Blue has the hex code #0047AB. It is a dark, vivid azure.

In the RGB color model it is made of 0% red, 27.8% green and 67.1% blue (0, 71, 171).

Its hue angle is 215°, with 100% saturation and 34% lightness. For print, the CMYK equivalent is 100% cyan, 58% magenta, 0% yellow and 33% black.

White text is the more readable choice on this background (contrast 8.44:1).

Cobalt Blue (#0047AB) color codes

HEX	`#0047AB`
RGB	`rgb(0, 71, 171)`
RGB percent	`rgb(0%, 27.8%, 67.1%)`
HSL	`hsl(215, 100%, 34%)`
HSV / HSB	`hsv(215, 100%, 67%)`
CMYK	`cmyk(100%, 58%, 0%, 33%)`
CIE LAB	`lab(32.8, 22.52, -58.44)`
CIE LCH	`lch(32.8, 62.63, 291.07)`
CIE XYZ	`xyz(9.601, 7.445, 39.451)`
Decimal	`18347`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with Cobalt Blue, 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 #0047AB	Ratio	AA	AAA	AA large
Sample text	2.49:1	Fail	Fail	Fail
Sample text	8.44:1	Pass	Pass	Pass

#0047AB as text on	Ratio	AA	AAA	AA large
Sample text	8.44:1	Pass	Pass	Pass
Sample text	2.49:1	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 #0047AB looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #0047ab; }
.text { color: #0047ab; }
.border { border: 2px solid #0047ab; }
.transparent { background-color: rgb(0 71 171 / 50%); }
.gradient { background: linear-gradient(to right, #0047ab, #0e00ab); }

Background

Text color

Border

Similar colors

See #0047AB on its hex code page

Questions

What color is #0047AB?: #0047AB is a dark, vivid azure known as Cobalt Blue. It belongs to the blue family of colors.
What is the RGB value of Cobalt Blue?: The RGB value is 0, 71, 171: 0 red, 71 green and 171 blue on a 0 to 255 scale.
What is the complementary color of Cobalt Blue?: The complementary color is #AB6400, found by rotating the hue 180° on the color wheel.
Is black or white text better on #0047AB?: White text. Black text has a contrast ratio of 2.49:1 and white text 8.44:1. WCAG asks for at least 4.5:1 for normal text.