What color is #646A6B?

#646A6B is a gray, closest to the named color Beautiful Darkness. It belongs to the gray family of colors.

What is the RGB value of #646A6B?

The RGB value is 100, 106, 107: 100 red, 106 green and 107 blue on a 0 to 255 scale.

What is the complementary color of #646A6B?

The complementary color is #6B6564, found by rotating the hue 180° on the color wheel.

Is black or white text better on #646A6B?

White text. Black text has a contrast ratio of 3.82:1 and white text 5.5:1. WCAG asks for at least 4.5:1 for normal text.

#646A6B color

#646A6B rgb(100, 106, 107)

Shades of gray

The hex color #646A6B is a gray.

In the RGB color model it is made of 39.2% red, 41.6% green and 42% blue (100, 106, 107).

Its hue angle is 189°, with 3% saturation and 41% lightness. For print, the CMYK equivalent is 7% cyan, 1% magenta, 0% yellow and 58% black.

The closest named color is Beautiful Darkness (#686D70), a difference of 1.9 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 5.5:1).

#646A6B color codes

HEX	`#646A6B`
RGB	`rgb(100, 106, 107)`
RGB percent	`rgb(39.2%, 41.6%, 42%)`
HSL	`hsl(189, 3%, 41%)`
HSV / HSB	`hsv(189, 7%, 42%)`
CMYK	`cmyk(7%, 1%, 0%, 58%)`
CIE LAB	`lab(44.35, -2.08, -1.36)`
CIE LCH	`lch(44.35, 2.48, 213.08)`
CIE XYZ	`xyz(13.063, 14.079, 15.936)`
Decimal	`6580843`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #646A6B, 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 #646A6B	Ratio	AA	AAA	AA large
Sample text	3.82:1	Fail	Fail	Pass
Sample text	5.5:1	Pass	Fail	Pass

#646A6B as text on	Ratio	AA	AAA	AA large
Sample text	5.5:1	Pass	Fail	Pass
Sample text	3.82:1	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 #646A6B looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #646a6b; }
.text { color: #646a6b; }
.border { border: 2px solid #646a6b; }
.transparent { background-color: rgb(100 106 107 / 50%); }
.gradient { background: linear-gradient(to right, #646a6b, #64676b); }

Background

Text color

Border

Similar colors

Questions

What color is #646A6B?: #646A6B is a gray, closest to the named color Beautiful Darkness. It belongs to the gray family of colors.
What is the RGB value of #646A6B?: The RGB value is 100, 106, 107: 100 red, 106 green and 107 blue on a 0 to 255 scale.
What is the complementary color of #646A6B?: The complementary color is #6B6564, found by rotating the hue 180° on the color wheel.
Is black or white text better on #646A6B?: White text. Black text has a contrast ratio of 3.82:1 and white text 5.5:1. WCAG asks for at least 4.5:1 for normal text.