What color is #640000?

#640000 is a very dark, vivid red, closest to the named color Spikey Red. It belongs to the red family of colors.

What is the RGB value of #640000?

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

What is the complementary color of #640000?

The complementary color is #006464, found by rotating the hue 180° on the color wheel.

Is black or white text better on #640000?

White text. Black text has a contrast ratio of 1.54:1 and white text 13.62:1. WCAG asks for at least 4.5:1 for normal text.

#640000 color

#640000 rgb(100, 0, 0)

Shades of red

The hex color #640000 is a very dark, vivid red.

In the RGB color model it is made of 39.2% red, 0% green and 0% blue (100, 0, 0).

Its hue angle is 0°, with 100% saturation and 20% lightness. For print, the CMYK equivalent is 0% cyan, 100% magenta, 100% yellow and 61% black.

The closest named color is Spikey Red (#600000), a difference of 0.9 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 13.62:1).

#640000 color codes

HEX	`#640000`
RGB	`rgb(100, 0, 0)`
RGB percent	`rgb(39.2%, 0%, 0%)`
HSL	`hsl(0, 100%, 20%)`
HSV / HSB	`hsv(0, 100%, 39%)`
CMYK	`cmyk(0%, 100%, 100%, 61%)`
CIE LAB	`lab(18.84, 40.3, 28.97)`
CIE LCH	`lch(18.84, 49.63, 35.7)`
CIE XYZ	`xyz(5.256, 2.71, 0.246)`
Decimal	`6553600`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #640000, 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 #640000	Ratio	AA	AAA	AA large
Sample text	1.54:1	Fail	Fail	Fail
Sample text	13.62:1	Pass	Pass	Pass

#640000 as text on	Ratio	AA	AAA	AA large
Sample text	13.62:1	Pass	Pass	Pass
Sample text	1.54:1	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 #640000 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #640000; }
.text { color: #640000; }
.border { border: 2px solid #640000; }
.transparent { background-color: rgb(100 0 0 / 50%); }
.gradient { background: linear-gradient(to right, #640000, #643200); }

Background

Text color

Border

Similar colors

Closest common color name: Maroon.

Questions

What color is #640000?: #640000 is a very dark, vivid red, closest to the named color Spikey Red. It belongs to the red family of colors.
What is the RGB value of #640000?: The RGB value is 100, 0, 0: 100 red, 0 green and 0 blue on a 0 to 255 scale.
What is the complementary color of #640000?: The complementary color is #006464, found by rotating the hue 180° on the color wheel.
Is black or white text better on #640000?: White text. Black text has a contrast ratio of 1.54:1 and white text 13.62:1. WCAG asks for at least 4.5:1 for normal text.