What color is #644F51?

#644F51 is a dark, grayish red, closest to the named color Dark Chocolate. It belongs to the gray family of colors.

What is the RGB value of #644F51?

The RGB value is 100, 79, 81: 100 red, 79 green and 81 blue on a 0 to 255 scale.

What is the complementary color of #644F51?

The complementary color is #4F6462, found by rotating the hue 180° on the color wheel.

Is black or white text better on #644F51?

White text. Black text has a contrast ratio of 2.78:1 and white text 7.56:1. WCAG asks for at least 4.5:1 for normal text.

#644F51 color

#644F51 rgb(100, 79, 81)

Shades of gray

The hex color #644F51 is a dark, grayish red.

In the RGB color model it is made of 39.2% red, 31% green and 31.8% blue (100, 79, 81).

Its hue angle is 354°, with 12% saturation and 35% lightness. For print, the CMYK equivalent is 0% cyan, 21% magenta, 19% yellow and 61% black.

The closest named color is Dark Chocolate (#624A49), a difference of 2.5 ΔE, a small difference.

White text is the more readable choice on this background (contrast 7.56:1).

#644F51 color codes

HEX	`#644F51`
RGB	`rgb(100, 79, 81)`
RGB percent	`rgb(39.2%, 31%, 31.8%)`
HSL	`hsl(354, 12%, 35%)`
HSV / HSB	`hsv(354, 21%, 39%)`
CMYK	`cmyk(0%, 21%, 19%, 61%)`
CIE LAB	`lab(35.78, 9.14, 2.17)`
CIE LCH	`lch(35.78, 9.39, 13.34)`
CIE XYZ	`xyz(9.537, 8.896, 8.998)`
Decimal	`6573905`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #644F51, 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 #644F51	Ratio	AA	AAA	AA large
Sample text	2.78:1	Fail	Fail	Fail
Sample text	7.56:1	Pass	Pass	Pass

#644F51 as text on	Ratio	AA	AAA	AA large
Sample text	7.56:1	Pass	Pass	Pass
Sample text	2.78:1	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 #644F51 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #644f51; }
.text { color: #644f51; }
.border { border: 2px solid #644f51; }
.transparent { background-color: rgb(100 79 81 / 50%); }
.gradient { background: linear-gradient(to right, #644f51, #64584f); }

Background

Text color

Border

Similar colors

Closest common color name: Umber.

Questions

What color is #644F51?: #644F51 is a dark, grayish red, closest to the named color Dark Chocolate. It belongs to the gray family of colors.
What is the RGB value of #644F51?: The RGB value is 100, 79, 81: 100 red, 79 green and 81 blue on a 0 to 255 scale.
What is the complementary color of #644F51?: The complementary color is #4F6462, found by rotating the hue 180° on the color wheel.
Is black or white text better on #644F51?: White text. Black text has a contrast ratio of 2.78:1 and white text 7.56:1. WCAG asks for at least 4.5:1 for normal text.