What color is #645BA1?

#645BA1 is a desaturated blue, closest to the named color Prophet Violet. It belongs to the blue family of colors.

What is the RGB value of #645BA1?

The RGB value is 100, 91, 161: 100 red, 91 green and 161 blue on a 0 to 255 scale.

What is the complementary color of #645BA1?

The complementary color is #98A15B, found by rotating the hue 180° on the color wheel.

Is black or white text better on #645BA1?

White text. Black text has a contrast ratio of 3.55:1 and white text 5.91:1. WCAG asks for at least 4.5:1 for normal text.

#645BA1 color

#645BA1 rgb(100, 91, 161)

Shades of blue

The hex color #645BA1 is a desaturated blue.

In the RGB color model it is made of 39.2% red, 35.7% green and 63.1% blue (100, 91, 161).

Its hue angle is 248°, with 28% saturation and 49% lightness. For print, the CMYK equivalent is 38% cyan, 43% magenta, 0% yellow and 37% black.

The closest named color is Prophet Violet (#6F58A6), a difference of 3.1 ΔE, a small difference.

White text is the more readable choice on this background (contrast 5.91:1).

#645BA1 color codes

HEX	`#645BA1`
RGB	`rgb(100, 91, 161)`
RGB percent	`rgb(39.2%, 35.7%, 63.1%)`
HSL	`hsl(248, 28%, 49%)`
HSV / HSB	`hsv(248, 43%, 63%)`
CMYK	`cmyk(38%, 43%, 0%, 37%)`
CIE LAB	`lab(42.41, 21, -36.78)`
CIE LCH	`lch(42.41, 42.35, 299.72)`
CIE XYZ	`xyz(15.428, 12.764, 35.362)`
Decimal	`6577057`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #645BA1, 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 #645BA1	Ratio	AA	AAA	AA large
Sample text	3.55:1	Fail	Fail	Pass
Sample text	5.91:1	Pass	Fail	Pass

#645BA1 as text on	Ratio	AA	AAA	AA large
Sample text	5.91:1	Pass	Fail	Pass
Sample text	3.55:1	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 #645BA1 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #645ba1; }
.text { color: #645ba1; }
.border { border: 2px solid #645ba1; }
.transparent { background-color: rgb(100 91 161 / 50%); }
.gradient { background: linear-gradient(to right, #645ba1, #875ba1); }

Background

Text color

Border

Similar colors

Closest common color name: Royal Purple.

Questions

What color is #645BA1?: #645BA1 is a desaturated blue, closest to the named color Prophet Violet. It belongs to the blue family of colors.
What is the RGB value of #645BA1?: The RGB value is 100, 91, 161: 100 red, 91 green and 161 blue on a 0 to 255 scale.
What is the complementary color of #645BA1?: The complementary color is #98A15B, found by rotating the hue 180° on the color wheel.
Is black or white text better on #645BA1?: White text. Black text has a contrast ratio of 3.55:1 and white text 5.91:1. WCAG asks for at least 4.5:1 for normal text.