What color is #373DDB?

#373DDB is a moderate blue, closest to the named color Vibrant Blue. It belongs to the blue family of colors.

What is the RGB value of #373DDB?

The RGB value is 55, 61, 219: 55 red, 61 green and 219 blue on a 0 to 255 scale.

What is the complementary color of #373DDB?

The complementary color is #DBD537, found by rotating the hue 180° on the color wheel.

Is black or white text better on #373DDB?

White text. Black text has a contrast ratio of 2.85:1 and white text 7.36:1. WCAG asks for at least 4.5:1 for normal text.

#373DDB color

#373DDB rgb(55, 61, 219)

Shades of blue

The hex color #373DDB is a moderate blue.

In the RGB color model it is made of 21.6% red, 23.9% green and 85.9% blue (55, 61, 219).

Its hue angle is 238°, with 69% saturation and 54% lightness. For print, the CMYK equivalent is 75% cyan, 72% magenta, 0% yellow and 14% black.

The closest named color is Vibrant Blue (#0339F8), a difference of 3.2 ΔE, a small difference.

White text is the more readable choice on this background (contrast 7.36:1).

#373DDB color codes

HEX	`#373DDB`
RGB	`rgb(55, 61, 219)`
RGB percent	`rgb(21.6%, 23.9%, 85.9%)`
HSL	`hsl(238, 69%, 54%)`
HSV / HSB	`hsv(238, 75%, 86%)`
CMYK	`cmyk(75%, 72%, 0%, 14%)`
CIE LAB	`lab(36.48, 50, -80.42)`
CIE LCH	`lch(36.48, 94.7, 301.87)`
CIE XYZ	`xyz(16.026, 9.262, 67.947)`
Decimal	`3620315`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #373DDB, 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 #373DDB	Ratio	AA	AAA	AA large
Sample text	2.85:1	Fail	Fail	Fail
Sample text	7.36:1	Pass	Pass	Pass

#373DDB as text on	Ratio	AA	AAA	AA large
Sample text	7.36:1	Pass	Pass	Pass
Sample text	2.85:1	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 #373DDB looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #373ddb; }
.text { color: #373ddb; }
.border { border: 2px solid #373ddb; }
.transparent { background-color: rgb(55 61 219 / 50%); }
.gradient { background: linear-gradient(to right, #373ddb, #8337db); }

Background

Text color

Border

Similar colors

Questions

What color is #373DDB?: #373DDB is a moderate blue, closest to the named color Vibrant Blue. It belongs to the blue family of colors.
What is the RGB value of #373DDB?: The RGB value is 55, 61, 219: 55 red, 61 green and 219 blue on a 0 to 255 scale.
What is the complementary color of #373DDB?: The complementary color is #DBD537, found by rotating the hue 180° on the color wheel.
Is black or white text better on #373DDB?: White text. Black text has a contrast ratio of 2.85:1 and white text 7.36:1. WCAG asks for at least 4.5:1 for normal text.