What color is #B21729?

#B21729 is a moderate red, closest to the named color Kirsch. It belongs to the red family of colors.

What is the RGB value of #B21729?

The RGB value is 178, 23, 41: 178 red, 23 green and 41 blue on a 0 to 255 scale.

What is the complementary color of #B21729?

The complementary color is #17B2A0, found by rotating the hue 180° on the color wheel.

Is black or white text better on #B21729?

White text. Black text has a contrast ratio of 3.05:1 and white text 6.89:1. WCAG asks for at least 4.5:1 for normal text.

#B21729 color

#B21729 rgb(178, 23, 41)

Shades of red

The hex color #B21729 is a moderate red.

In the RGB color model it is made of 69.8% red, 9% green and 16.1% blue (178, 23, 41).

Its hue angle is 353°, with 77% saturation and 39% lightness. For print, the CMYK equivalent is 0% cyan, 87% magenta, 77% yellow and 30% black.

The closest named color is Kirsch (#B2132B), a difference of 0.9 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 6.89:1).

#B21729 color codes

HEX	`#B21729`
RGB	`rgb(178, 23, 41)`
RGB percent	`rgb(69.8%, 9%, 16.1%)`
HSL	`hsl(353, 77%, 39%)`
HSV / HSB	`hsv(353, 87%, 70%)`
CMYK	`cmyk(0%, 87%, 77%, 30%)`
CIE LAB	`lab(38.27, 58.78, 32.7)`
CIE LCH	`lch(38.27, 67.26, 29.09)`
CIE XYZ	`xyz(19.069, 10.241, 3.07)`
Decimal	`11671337`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #B21729, 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 #B21729	Ratio	AA	AAA	AA large
Sample text	3.05:1	Fail	Fail	Pass
Sample text	6.89:1	Pass	Fail	Pass

#B21729 as text on	Ratio	AA	AAA	AA large
Sample text	6.89:1	Pass	Fail	Pass
Sample text	3.05:1	Fail	Fail	Pass

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 #B21729 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #b21729; }
.text { color: #b21729; }
.border { border: 2px solid #b21729; }
.transparent { background-color: rgb(178 23 41 / 50%); }
.gradient { background: linear-gradient(to right, #b21729, #b25217); }

Background

Text color

Border

Similar colors

Closest common color name: Auburn.

Questions

What color is #B21729?: #B21729 is a moderate red, closest to the named color Kirsch. It belongs to the red family of colors.
What is the RGB value of #B21729?: The RGB value is 178, 23, 41: 178 red, 23 green and 41 blue on a 0 to 255 scale.
What is the complementary color of #B21729?: The complementary color is #17B2A0, found by rotating the hue 180° on the color wheel.
Is black or white text better on #B21729?: White text. Black text has a contrast ratio of 3.05:1 and white text 6.89:1. WCAG asks for at least 4.5:1 for normal text.