What color is #1B3863?

#1B3863 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 #1B3863?

The RGB value is 27, 56, 99: 27 red, 56 green and 99 blue on a 0 to 255 scale.

What is the complementary color of #1B3863?

The complementary color is #63461B, found by rotating the hue 180° on the color wheel.

Is black or white text better on #1B3863?

White text. Black text has a contrast ratio of 1.79:1 and white text 11.72:1. WCAG asks for at least 4.5:1 for normal text.

#1B3863 color

#1B3863 rgb(27, 56, 99)

Shades of blue

The hex color #1B3863 is a dark, moderate azure.

In the RGB color model it is made of 10.6% red, 22% green and 38.8% blue (27, 56, 99).

Its hue angle is 216°, with 57% saturation and 25% lightness. For print, the CMYK equivalent is 73% cyan, 43% magenta, 0% yellow and 61% black.

The closest named color is Lost in Space (#03386A), a difference of 2.5 ΔE, a small difference.

White text is the more readable choice on this background (contrast 11.72:1).

#1B3863 color codes

HEX	`#1B3863`
RGB	`rgb(27, 56, 99)`
RGB percent	`rgb(10.6%, 22%, 38.8%)`
HSL	`hsl(216, 57%, 25%)`
HSV / HSB	`hsv(216, 73%, 39%)`
CMYK	`cmyk(73%, 43%, 0%, 61%)`
CIE LAB	`lab(23.54, 5.15, -28.63)`
CIE LCH	`lch(23.54, 29.09, 280.2)`
CIE XYZ	`xyz(4.117, 3.962, 12.35)`
Decimal	`1783907`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #1B3863, 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 #1B3863	Ratio	AA	AAA	AA large
Sample text	1.79:1	Fail	Fail	Fail
Sample text	11.72:1	Pass	Pass	Pass

#1B3863 as text on	Ratio	AA	AAA	AA large
Sample text	11.72:1	Pass	Pass	Pass
Sample text	1.79:1	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 #1B3863 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #1b3863; }
.text { color: #1b3863; }
.border { border: 2px solid #1b3863; }
.transparent { background-color: rgb(27 56 99 / 50%); }
.gradient { background: linear-gradient(to right, #1b3863, #221b63); }

Background

Text color

Border

Similar colors

Closest common color name: Prussian Blue.

Questions

What color is #1B3863?: #1B3863 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 #1B3863?: The RGB value is 27, 56, 99: 27 red, 56 green and 99 blue on a 0 to 255 scale.
What is the complementary color of #1B3863?: The complementary color is #63461B, found by rotating the hue 180° on the color wheel.
Is black or white text better on #1B3863?: White text. Black text has a contrast ratio of 1.79:1 and white text 11.72:1. WCAG asks for at least 4.5:1 for normal text.