What color is #645C91?

#645C91 is a grayish blue, closest to the named color Wizard’s Potion. It belongs to the blue family of colors.

What is the RGB value of #645C91?

The RGB value is 100, 92, 145: 100 red, 92 green and 145 blue on a 0 to 255 scale.

What is the complementary color of #645C91?

The complementary color is #89915C, found by rotating the hue 180° on the color wheel.

Is black or white text better on #645C91?

White text. Black text has a contrast ratio of 3.48:1 and white text 6.03:1. WCAG asks for at least 4.5:1 for normal text.

#645C91 color

#645C91 rgb(100, 92, 145)

Shades of blue

The hex color #645C91 is a grayish blue.

In the RGB color model it is made of 39.2% red, 36.1% green and 56.9% blue (100, 92, 145).

Its hue angle is 249°, with 22% saturation and 46% lightness. For print, the CMYK equivalent is 31% cyan, 37% magenta, 0% yellow and 43% black.

The closest named color is Wizard’s Potion (#5D6098), a difference of 3.4 ΔE, a small difference.

White text is the more readable choice on this background (contrast 6.03:1).

#645C91 color codes

HEX	`#645C91`
RGB	`rgb(100, 92, 145)`
RGB percent	`rgb(39.2%, 36.1%, 56.9%)`
HSL	`hsl(249, 22%, 46%)`
HSV / HSB	`hsv(249, 37%, 57%)`
CMYK	`cmyk(31%, 37%, 0%, 43%)`
CIE LAB	`lab(41.86, 15.88, -28.08)`
CIE LCH	`lch(41.86, 32.26, 299.49)`
CIE XYZ	`xyz(14.192, 12.408, 28.43)`
Decimal	`6577297`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #645C91, 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 #645C91	Ratio	AA	AAA	AA large
Sample text	3.48:1	Fail	Fail	Pass
Sample text	6.03:1	Pass	Fail	Pass

#645C91 as text on	Ratio	AA	AAA	AA large
Sample text	6.03:1	Pass	Fail	Pass
Sample text	3.48:1	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 #645C91 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #645c91; }
.text { color: #645c91; }
.border { border: 2px solid #645c91; }
.transparent { background-color: rgb(100 92 145 / 50%); }
.gradient { background: linear-gradient(to right, #645c91, #7e5c91); }

Background

Text color

Border

Similar colors

Closest common color name: Royal Purple.

Questions

What color is #645C91?: #645C91 is a grayish blue, closest to the named color Wizard’s Potion. It belongs to the blue family of colors.
What is the RGB value of #645C91?: The RGB value is 100, 92, 145: 100 red, 92 green and 145 blue on a 0 to 255 scale.
What is the complementary color of #645C91?: The complementary color is #89915C, found by rotating the hue 180° on the color wheel.
Is black or white text better on #645C91?: White text. Black text has a contrast ratio of 3.48:1 and white text 6.03:1. WCAG asks for at least 4.5:1 for normal text.