What color is #172857?

#172857 is a dark, moderate blue, closest to the named color Fibonacci Blue. It belongs to the blue family of colors.

What is the RGB value of #172857?

The RGB value is 23, 40, 87: 23 red, 40 green and 87 blue on a 0 to 255 scale.

What is the complementary color of #172857?

The complementary color is #574617, found by rotating the hue 180° on the color wheel.

Is black or white text better on #172857?

White text. Black text has a contrast ratio of 1.48:1 and white text 14.21:1. WCAG asks for at least 4.5:1 for normal text.

#172857 color

#172857 rgb(23, 40, 87)

Shades of blue

The hex color #172857 is a dark, moderate blue.

In the RGB color model it is made of 9% red, 15.7% green and 34.1% blue (23, 40, 87).

Its hue angle is 224°, with 58% saturation and 22% lightness. For print, the CMYK equivalent is 74% cyan, 54% magenta, 0% yellow and 66% black.

The closest named color is Fibonacci Blue (#112358), a difference of 1.9 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 14.21:1).

#172857 color codes

HEX	`#172857`
RGB	`rgb(23, 40, 87)`
RGB percent	`rgb(9%, 15.7%, 34.1%)`
HSL	`hsl(224, 58%, 22%)`
HSV / HSB	`hsv(224, 74%, 34%)`
CMYK	`cmyk(74%, 54%, 0%, 66%)`
CIE LAB	`lab(17.4, 11.03, -30.57)`
CIE LCH	`lch(17.4, 32.5, 289.84)`
CIE XYZ	`xyz(2.832, 2.388, 9.327)`
Decimal	`1517655`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #172857, 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 #172857	Ratio	AA	AAA	AA large
Sample text	1.48:1	Fail	Fail	Fail
Sample text	14.21:1	Pass	Pass	Pass

#172857 as text on	Ratio	AA	AAA	AA large
Sample text	14.21:1	Pass	Pass	Pass
Sample text	1.48:1	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 #172857 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #172857; }
.text { color: #172857; }
.border { border: 2px solid #172857; }
.transparent { background-color: rgb(23 40 87 / 50%); }
.gradient { background: linear-gradient(to right, #172857, #261757); }

Background

Text color

Border

Similar colors

Closest common color name: Oxford Blue.

Questions

What color is #172857?: #172857 is a dark, moderate blue, closest to the named color Fibonacci Blue. It belongs to the blue family of colors.
What is the RGB value of #172857?: The RGB value is 23, 40, 87: 23 red, 40 green and 87 blue on a 0 to 255 scale.
What is the complementary color of #172857?: The complementary color is #574617, found by rotating the hue 180° on the color wheel.
Is black or white text better on #172857?: White text. Black text has a contrast ratio of 1.48:1 and white text 14.21:1. WCAG asks for at least 4.5:1 for normal text.