What color is #646B6E?

#646B6E is a gray, closest to the named color Beautiful Darkness. It belongs to the gray family of colors.

What is the RGB value of #646B6E?

The RGB value is 100, 107, 110: 100 red, 107 green and 110 blue on a 0 to 255 scale.

What is the complementary color of #646B6E?

The complementary color is #6E6764, found by rotating the hue 180° on the color wheel.

Is black or white text better on #646B6E?

White text. Black text has a contrast ratio of 3.87:1 and white text 5.43:1. WCAG asks for at least 4.5:1 for normal text.

#646B6E color

#646B6E rgb(100, 107, 110)

Shades of gray

The hex color #646B6E is a gray.

In the RGB color model it is made of 39.2% red, 42% green and 43.1% blue (100, 107, 110).

Its hue angle is 198°, with 5% saturation and 41% lightness. For print, the CMYK equivalent is 9% cyan, 3% magenta, 0% yellow and 57% black.

The closest named color is Beautiful Darkness (#686D70), a difference of 1.4 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 5.43:1).

#646B6E color codes

HEX	`#646B6E`
RGB	`rgb(100, 107, 110)`
RGB percent	`rgb(39.2%, 42%, 43.1%)`
HSL	`hsl(198, 5%, 41%)`
HSV / HSB	`hsv(198, 9%, 43%)`
CMYK	`cmyk(9%, 3%, 0%, 57%)`
CIE LAB	`lab(44.73, -2.01, -2.6)`
CIE LCH	`lch(44.73, 3.29, 232.2)`
CIE XYZ	`xyz(13.327, 14.35, 16.817)`
Decimal	`6581102`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #646B6E, 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 #646B6E	Ratio	AA	AAA	AA large
Sample text	3.87:1	Fail	Fail	Pass
Sample text	5.43:1	Pass	Fail	Pass

#646B6E as text on	Ratio	AA	AAA	AA large
Sample text	5.43:1	Pass	Fail	Pass
Sample text	3.87:1	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 #646B6E looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #646b6e; }
.text { color: #646b6e; }
.border { border: 2px solid #646b6e; }
.transparent { background-color: rgb(100 107 110 / 50%); }
.gradient { background: linear-gradient(to right, #646b6e, #64666e); }

Background

Text color

Border

Similar colors

Questions

What color is #646B6E?: #646B6E is a gray, closest to the named color Beautiful Darkness. It belongs to the gray family of colors.
What is the RGB value of #646B6E?: The RGB value is 100, 107, 110: 100 red, 107 green and 110 blue on a 0 to 255 scale.
What is the complementary color of #646B6E?: The complementary color is #6E6764, found by rotating the hue 180° on the color wheel.
Is black or white text better on #646B6E?: White text. Black text has a contrast ratio of 3.87:1 and white text 5.43:1. WCAG asks for at least 4.5:1 for normal text.