What color is #1D3557?

#1D3557 is a dark, moderate azure, closest to the named color Nautilus. It belongs to the blue family of colors.

What is the RGB value of #1D3557?

The RGB value is 29, 53, 87: 29 red, 53 green and 87 blue on a 0 to 255 scale.

What is the complementary color of #1D3557?

The complementary color is #573F1D, found by rotating the hue 180° on the color wheel.

Is black or white text better on #1D3557?

White text. Black text has a contrast ratio of 1.7:1 and white text 12.36:1. WCAG asks for at least 4.5:1 for normal text.

#1D3557 color

#1D3557 rgb(29, 53, 87)

Shades of blue

The hex color #1D3557 is a dark, moderate azure.

In the RGB color model it is made of 11.4% red, 20.8% green and 34.1% blue (29, 53, 87).

Its hue angle is 215°, with 50% saturation and 23% lightness. For print, the CMYK equivalent is 67% cyan, 39% magenta, 0% yellow and 66% black.

The closest named color is Nautilus (#273C5A), a difference of 2.6 ΔE, a small difference.

White text is the more readable choice on this background (contrast 12.36:1).

#1D3557 color codes

HEX	`#1D3557`
RGB	`rgb(29, 53, 87)`
RGB percent	`rgb(11.4%, 20.8%, 34.1%)`
HSL	`hsl(215, 50%, 23%)`
HSV / HSB	`hsv(215, 67%, 34%)`
CMYK	`cmyk(67%, 39%, 0%, 66%)`
CIE LAB	`lab(21.93, 2.86, -23.33)`
CIE LCH	`lch(21.93, 23.5, 276.99)`
CIE XYZ	`xyz(3.499, 3.495, 9.505)`
Decimal	`1914199`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #1D3557, 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 #1D3557	Ratio	AA	AAA	AA large
Sample text	1.7:1	Fail	Fail	Fail
Sample text	12.36:1	Pass	Pass	Pass

#1D3557 as text on	Ratio	AA	AAA	AA large
Sample text	12.36:1	Pass	Pass	Pass
Sample text	1.7:1	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 #1D3557 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #1d3557; }
.text { color: #1d3557; }
.border { border: 2px solid #1d3557; }
.transparent { background-color: rgb(29 53 87 / 50%); }
.gradient { background: linear-gradient(to right, #1d3557, #221d57); }

Background

Text color

Border

Similar colors

Questions

What color is #1D3557?: #1D3557 is a dark, moderate azure, closest to the named color Nautilus. It belongs to the blue family of colors.
What is the RGB value of #1D3557?: The RGB value is 29, 53, 87: 29 red, 53 green and 87 blue on a 0 to 255 scale.
What is the complementary color of #1D3557?: The complementary color is #573F1D, found by rotating the hue 180° on the color wheel.
Is black or white text better on #1D3557?: White text. Black text has a contrast ratio of 1.7:1 and white text 12.36:1. WCAG asks for at least 4.5:1 for normal text.