What color is #1D51A3?

#1D51A3 is a dark, moderate azure, closest to the named color Fist of the North Star. It belongs to the blue family of colors.

What is the RGB value of #1D51A3?

The RGB value is 29, 81, 163: 29 red, 81 green and 163 blue on a 0 to 255 scale.

What is the complementary color of #1D51A3?

The complementary color is #A36F1D, found by rotating the hue 180° on the color wheel.

Is black or white text better on #1D51A3?

White text. Black text has a contrast ratio of 2.76:1 and white text 7.61:1. WCAG asks for at least 4.5:1 for normal text.

#1D51A3 color

#1D51A3 rgb(29, 81, 163)

Shades of blue

The hex color #1D51A3 is a dark, moderate azure.

In the RGB color model it is made of 11.4% red, 31.8% green and 63.9% blue (29, 81, 163).

Its hue angle is 217°, with 70% saturation and 38% lightness. For print, the CMYK equivalent is 82% cyan, 50% magenta, 0% yellow and 36% black.

The closest named color is Fist of the North Star (#225599), a difference of 2.1 ΔE, a small difference.

White text is the more readable choice on this background (contrast 7.61:1).

#1D51A3 color codes

HEX	`#1D51A3`
RGB	`rgb(29, 81, 163)`
RGB percent	`rgb(11.4%, 31.8%, 63.9%)`
HSL	`hsl(217, 70%, 38%)`
HSV / HSB	`hsv(217, 82%, 64%)`
CMYK	`cmyk(82%, 50%, 0%, 36%)`
CIE LAB	`lab(35.58, 14.19, -49.13)`
CIE LCH	`lch(35.58, 51.14, 286.11)`
CIE XYZ	`xyz(10.058, 8.789, 35.81)`
Decimal	`1921443`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #1D51A3, 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 #1D51A3	Ratio	AA	AAA	AA large
Sample text	2.76:1	Fail	Fail	Fail
Sample text	7.61:1	Pass	Pass	Pass

#1D51A3 as text on	Ratio	AA	AAA	AA large
Sample text	7.61:1	Pass	Pass	Pass
Sample text	2.76:1	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 #1D51A3 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #1d51a3; }
.text { color: #1d51a3; }
.border { border: 2px solid #1d51a3; }
.transparent { background-color: rgb(29 81 163 / 50%); }
.gradient { background: linear-gradient(to right, #1d51a3, #2c1da3); }

Background

Text color

Border

Similar colors

Questions

What color is #1D51A3?: #1D51A3 is a dark, moderate azure, closest to the named color Fist of the North Star. It belongs to the blue family of colors.
What is the RGB value of #1D51A3?: The RGB value is 29, 81, 163: 29 red, 81 green and 163 blue on a 0 to 255 scale.
What is the complementary color of #1D51A3?: The complementary color is #A36F1D, found by rotating the hue 180° on the color wheel.
Is black or white text better on #1D51A3?: White text. Black text has a contrast ratio of 2.76:1 and white text 7.61:1. WCAG asks for at least 4.5:1 for normal text.