What color is #646A6A?

#646A6A is a gray, closest to the named color Beautiful Darkness. It belongs to the gray family of colors.

What is the RGB value of #646A6A?

The RGB value is 100, 106, 106: 100 red, 106 green and 106 blue on a 0 to 255 scale.

What is the complementary color of #646A6A?

The complementary color is #6A6464, found by rotating the hue 180° on the color wheel.

Is black or white text better on #646A6A?

White text. Black text has a contrast ratio of 3.81:1 and white text 5.51:1. WCAG asks for at least 4.5:1 for normal text.

#646A6A color

#646A6A rgb(100, 106, 106)

Shades of gray

The hex color #646A6A is a gray.

In the RGB color model it is made of 39.2% red, 41.6% green and 41.6% blue (100, 106, 106).

Its hue angle is 180°, with 3% saturation and 40% lightness. For print, the CMYK equivalent is 6% cyan, 0% magenta, 0% yellow and 58% black.

The closest named color is Beautiful Darkness (#686D70), a difference of 2.4 ΔE, a small difference.

White text is the more readable choice on this background (contrast 5.51:1).

#646A6A color codes

HEX	`#646A6A`
RGB	`rgb(100, 106, 106)`
RGB percent	`rgb(39.2%, 41.6%, 41.6%)`
HSL	`hsl(180, 3%, 40%)`
HSV / HSB	`hsv(180, 6%, 42%)`
CMYK	`cmyk(6%, 0%, 0%, 58%)`
CIE LAB	`lab(44.32, -2.3, -0.8)`
CIE LCH	`lch(44.32, 2.43, 199.12)`
CIE XYZ	`xyz(13.011, 14.058, 15.661)`
Decimal	`6580842`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #646A6A, 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 #646A6A	Ratio	AA	AAA	AA large
Sample text	3.81:1	Fail	Fail	Pass
Sample text	5.51:1	Pass	Fail	Pass

#646A6A as text on	Ratio	AA	AAA	AA large
Sample text	5.51:1	Pass	Fail	Pass
Sample text	3.81:1	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 #646A6A looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #646a6a; }
.text { color: #646a6a; }
.border { border: 2px solid #646a6a; }
.transparent { background-color: rgb(100 106 106 / 50%); }
.gradient { background: linear-gradient(to right, #646a6a, #64676a); }

Background

Text color

Border

Similar colors

Questions

What color is #646A6A?: #646A6A is a gray, closest to the named color Beautiful Darkness. It belongs to the gray family of colors.
What is the RGB value of #646A6A?: The RGB value is 100, 106, 106: 100 red, 106 green and 106 blue on a 0 to 255 scale.
What is the complementary color of #646A6A?: The complementary color is #6A6464, found by rotating the hue 180° on the color wheel.
Is black or white text better on #646A6A?: White text. Black text has a contrast ratio of 3.81:1 and white text 5.51:1. WCAG asks for at least 4.5:1 for normal text.