What color is #183B6F?

#183B6F is a dark, moderate azure, closest to the named color Lost in Space. It belongs to the blue family of colors.

What is the RGB value of #183B6F?

The RGB value is 24, 59, 111: 24 red, 59 green and 111 blue on a 0 to 255 scale.

What is the complementary color of #183B6F?

The complementary color is #6F4C18, found by rotating the hue 180° on the color wheel.

Is black or white text better on #183B6F?

White text. Black text has a contrast ratio of 1.89:1 and white text 11.09:1. WCAG asks for at least 4.5:1 for normal text.

#183B6F color

#183B6F rgb(24, 59, 111)

Shades of blue

The hex color #183B6F is a dark, moderate azure.

In the RGB color model it is made of 9.4% red, 23.1% green and 43.5% blue (24, 59, 111).

Its hue angle is 216°, with 64% saturation and 26% lightness. For print, the CMYK equivalent is 78% cyan, 47% magenta, 0% yellow and 56% black.

The closest named color is Lost in Space (#03386A), a difference of 2.1 ΔE, a small difference.

White text is the more readable choice on this background (contrast 11.09:1).

#183B6F color codes

HEX	`#183B6F`
RGB	`rgb(24, 59, 111)`
RGB percent	`rgb(9.4%, 23.1%, 43.5%)`
HSL	`hsl(216, 64%, 26%)`
HSV / HSB	`hsv(216, 78%, 44%)`
CMYK	`cmyk(78%, 47%, 0%, 56%)`
CIE LAB	`lab(25.17, 7.49, -33.78)`
CIE LCH	`lch(25.17, 34.6, 282.5)`
CIE XYZ	`xyz(4.809, 4.469, 15.645)`
Decimal	`1588079`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #183B6F, 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 #183B6F	Ratio	AA	AAA	AA large
Sample text	1.89:1	Fail	Fail	Fail
Sample text	11.09:1	Pass	Pass	Pass

#183B6F as text on	Ratio	AA	AAA	AA large
Sample text	11.09:1	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 #183B6F looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #183b6f; }
.text { color: #183b6f; }
.border { border: 2px solid #183b6f; }
.transparent { background-color: rgb(24 59 111 / 50%); }
.gradient { background: linear-gradient(to right, #183b6f, #20186f); }

Background

Text color

Border

Similar colors

Closest common color name: Prussian Blue.

Questions

What color is #183B6F?: #183B6F is a dark, moderate azure, closest to the named color Lost in Space. It belongs to the blue family of colors.
What is the RGB value of #183B6F?: The RGB value is 24, 59, 111: 24 red, 59 green and 111 blue on a 0 to 255 scale.
What is the complementary color of #183B6F?: The complementary color is #6F4C18, found by rotating the hue 180° on the color wheel.
Is black or white text better on #183B6F?: White text. Black text has a contrast ratio of 1.89:1 and white text 11.09:1. WCAG asks for at least 4.5:1 for normal text.