What color is #644D78?

#644D78 is a grayish violet, closest to the named color Royal Robe. It belongs to the purple family of colors.

What is the RGB value of #644D78?

The RGB value is 100, 77, 120: 100 red, 77 green and 120 blue on a 0 to 255 scale.

What is the complementary color of #644D78?

The complementary color is #61784D, found by rotating the hue 180° on the color wheel.

Is black or white text better on #644D78?

White text. Black text has a contrast ratio of 2.87:1 and white text 7.31:1. WCAG asks for at least 4.5:1 for normal text.

#644D78 color

#644D78 rgb(100, 77, 120)

Shades of purple

The hex color #644D78 is a grayish violet.

In the RGB color model it is made of 39.2% red, 30.2% green and 47.1% blue (100, 77, 120).

Its hue angle is 272°, with 22% saturation and 39% lightness. For print, the CMYK equivalent is 17% cyan, 36% magenta, 0% yellow and 53% black.

The closest named color is Royal Robe (#614A7B), a difference of 1.9 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 7.31:1).

#644D78 color codes

HEX	`#644D78`
RGB	`rgb(100, 77, 120)`
RGB percent	`rgb(39.2%, 30.2%, 47.1%)`
HSL	`hsl(272, 22%, 39%)`
HSV / HSB	`hsv(272, 36%, 47%)`
CMYK	`cmyk(17%, 36%, 0%, 53%)`
CIE LAB	`lab(36.69, 18.72, -20.87)`
CIE LCH	`lch(36.69, 28.04, 311.89)`
CIE XYZ	`xyz(11.299, 9.373, 18.98)`
Decimal	`6573432`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #644D78, 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 #644D78	Ratio	AA	AAA	AA large
Sample text	2.87:1	Fail	Fail	Fail
Sample text	7.31:1	Pass	Pass	Pass

#644D78 as text on	Ratio	AA	AAA	AA large
Sample text	7.31:1	Pass	Pass	Pass
Sample text	2.87:1	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 #644D78 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #644d78; }
.text { color: #644d78; }
.border { border: 2px solid #644d78; }
.transparent { background-color: rgb(100 77 120 / 50%); }
.gradient { background: linear-gradient(to right, #644d78, #784d76); }

Background

Text color

Border

Similar colors

Closest common color name: Plum.

Questions

What color is #644D78?: #644D78 is a grayish violet, closest to the named color Royal Robe. It belongs to the purple family of colors.
What is the RGB value of #644D78?: The RGB value is 100, 77, 120: 100 red, 77 green and 120 blue on a 0 to 255 scale.
What is the complementary color of #644D78?: The complementary color is #61784D, found by rotating the hue 180° on the color wheel.
Is black or white text better on #644D78?: White text. Black text has a contrast ratio of 2.87:1 and white text 7.31:1. WCAG asks for at least 4.5:1 for normal text.