What color is #646B6F?

#646B6F is a gray, closest to the named color Beautiful Darkness. It belongs to the gray family of colors.

What is the RGB value of #646B6F?

The RGB value is 100, 107, 111: 100 red, 107 green and 111 blue on a 0 to 255 scale.

What is the complementary color of #646B6F?

The complementary color is #6F6864, found by rotating the hue 180° on the color wheel.

Is black or white text better on #646B6F?

White text. Black text has a contrast ratio of 3.87:1 and white text 5.42:1. WCAG asks for at least 4.5:1 for normal text.

#646B6F color

#646B6F rgb(100, 107, 111)

Shades of gray

The hex color #646B6F is a gray.

In the RGB color model it is made of 39.2% red, 42% green and 43.5% blue (100, 107, 111).

Its hue angle is 202°, with 5% saturation and 41% lightness. For print, the CMYK equivalent is 10% cyan, 4% magenta, 0% yellow and 56% black.

The closest named color is Beautiful Darkness (#686D70), a difference of 1.3 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 5.42:1).

#646B6F color codes

HEX	`#646B6F`
RGB	`rgb(100, 107, 111)`
RGB percent	`rgb(39.2%, 42%, 43.5%)`
HSL	`hsl(202, 5%, 41%)`
HSV / HSB	`hsv(202, 10%, 44%)`
CMYK	`cmyk(10%, 4%, 0%, 56%)`
CIE LAB	`lab(44.76, -1.79, -3.15)`
CIE LCH	`lch(44.76, 3.63, 240.39)`
CIE XYZ	`xyz(13.382, 14.372, 17.105)`
Decimal	`6581103`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #646B6F, 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 #646B6F	Ratio	AA	AAA	AA large
Sample text	3.87:1	Fail	Fail	Pass
Sample text	5.42:1	Pass	Fail	Pass

#646B6F as text on	Ratio	AA	AAA	AA large
Sample text	5.42:1	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 #646B6F looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #646b6f; }
.text { color: #646b6f; }
.border { border: 2px solid #646b6f; }
.transparent { background-color: rgb(100 107 111 / 50%); }
.gradient { background: linear-gradient(to right, #646b6f, #64666f); }

Background

Text color

Border

Similar colors

Questions

What color is #646B6F?: #646B6F is a gray, closest to the named color Beautiful Darkness. It belongs to the gray family of colors.
What is the RGB value of #646B6F?: The RGB value is 100, 107, 111: 100 red, 107 green and 111 blue on a 0 to 255 scale.
What is the complementary color of #646B6F?: The complementary color is #6F6864, found by rotating the hue 180° on the color wheel.
Is black or white text better on #646B6F?: White text. Black text has a contrast ratio of 3.87:1 and white text 5.42:1. WCAG asks for at least 4.5:1 for normal text.