What color is #00397B?

#00397B 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 #00397B?

The RGB value is 0, 57, 123: 0 red, 57 green and 123 blue on a 0 to 255 scale.

What is the complementary color of #00397B?

The complementary color is #7B4200, found by rotating the hue 180° on the color wheel.

Is black or white text better on #00397B?

White text. Black text has a contrast ratio of 1.87:1 and white text 11.22:1. WCAG asks for at least 4.5:1 for normal text.

#00397B color

#00397B rgb(0, 57, 123)

Shades of blue

The hex color #00397B is a dark, vivid azure.

In the RGB color model it is made of 0% red, 22.4% green and 48.2% blue (0, 57, 123).

Its hue angle is 212°, with 100% saturation and 24% lightness. For print, the CMYK equivalent is 100% cyan, 54% magenta, 0% yellow and 52% black.

The closest named color is Tardis Blue (#003B6F), a difference of 2.4 ΔE, a small difference.

White text is the more readable choice on this background (contrast 11.22:1).

#00397B color codes

HEX	`#00397B`
RGB	`rgb(0, 57, 123)`
RGB percent	`rgb(0%, 22.4%, 48.2%)`
HSL	`hsl(212, 100%, 24%)`
HSV / HSB	`hsv(212, 100%, 48%)`
CMYK	`cmyk(100%, 54%, 0%, 52%)`
CIE LAB	`lab(24.81, 11.89, -42)`
CIE LCH	`lch(24.81, 43.65, 285.8)`
CIE XYZ	`xyz(5.037, 4.356, 19.31)`
Decimal	`14715`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #00397B, 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 #00397B	Ratio	AA	AAA	AA large
Sample text	1.87:1	Fail	Fail	Fail
Sample text	11.22:1	Pass	Pass	Pass

#00397B as text on	Ratio	AA	AAA	AA large
Sample text	11.22:1	Pass	Pass	Pass
Sample text	1.87:1	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 #00397B looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #00397b; }
.text { color: #00397b; }
.border { border: 2px solid #00397b; }
.transparent { background-color: rgb(0 57 123 / 50%); }
.gradient { background: linear-gradient(to right, #00397b, #05007b); }

Background

Text color

Border

Similar colors

Closest common color name: Prussian Blue.

Questions

What color is #00397B?: #00397B 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 #00397B?: The RGB value is 0, 57, 123: 0 red, 57 green and 123 blue on a 0 to 255 scale.
What is the complementary color of #00397B?: The complementary color is #7B4200, found by rotating the hue 180° on the color wheel.
Is black or white text better on #00397B?: White text. Black text has a contrast ratio of 1.87:1 and white text 11.22:1. WCAG asks for at least 4.5:1 for normal text.