What color is #173F79?

#173F79 is a dark, moderate azure, closest to the named color Aegean Blue. It belongs to the blue family of colors.

What is the RGB value of #173F79?

The RGB value is 23, 63, 121: 23 red, 63 green and 121 blue on a 0 to 255 scale.

What is the complementary color of #173F79?

The complementary color is #795117, found by rotating the hue 180° on the color wheel.

Is black or white text better on #173F79?

White text. Black text has a contrast ratio of 2.02:1 and white text 10.38:1. WCAG asks for at least 4.5:1 for normal text.

#173F79 color

#173F79 rgb(23, 63, 121)

Shades of blue

The hex color #173F79 is a dark, moderate azure.

In the RGB color model it is made of 9% red, 24.7% green and 47.5% blue (23, 63, 121).

Its hue angle is 216°, with 68% saturation and 28% lightness. For print, the CMYK equivalent is 81% cyan, 48% magenta, 0% yellow and 53% black.

The closest named color is Aegean Blue (#1B416F), a difference of 1.9 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 10.38:1).

#173F79 color codes

HEX	`#173F79`
RGB	`rgb(23, 63, 121)`
RGB percent	`rgb(9%, 24.7%, 47.5%)`
HSL	`hsl(216, 68%, 28%)`
HSV / HSB	`hsv(216, 81%, 47%)`
CMYK	`cmyk(81%, 48%, 0%, 53%)`
CIE LAB	`lab(27.07, 8.71, -37.08)`
CIE LCH	`lch(27.07, 38.09, 283.22)`
CIE XYZ	`xyz(5.581, 5.117, 18.779)`
Decimal	`1523577`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #173F79, 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 #173F79	Ratio	AA	AAA	AA large
Sample text	2.02:1	Fail	Fail	Fail
Sample text	10.38:1	Pass	Pass	Pass

#173F79 as text on	Ratio	AA	AAA	AA large
Sample text	10.38:1	Pass	Pass	Pass
Sample text	2.02:1	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 #173F79 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #173f79; }
.text { color: #173f79; }
.border { border: 2px solid #173f79; }
.transparent { background-color: rgb(23 63 121 / 50%); }
.gradient { background: linear-gradient(to right, #173f79, #201779); }

Background

Text color

Border

Similar colors

Closest common color name: Cobalt Blue.

Questions

What color is #173F79?: #173F79 is a dark, moderate azure, closest to the named color Aegean Blue. It belongs to the blue family of colors.
What is the RGB value of #173F79?: The RGB value is 23, 63, 121: 23 red, 63 green and 121 blue on a 0 to 255 scale.
What is the complementary color of #173F79?: The complementary color is #795117, found by rotating the hue 180° on the color wheel.
Is black or white text better on #173F79?: White text. Black text has a contrast ratio of 2.02:1 and white text 10.38:1. WCAG asks for at least 4.5:1 for normal text.