What color is #646777?

#646777 is a grayish blue, closest to the named color Alley Cat. It belongs to the gray family of colors.

What is the RGB value of #646777?

The RGB value is 100, 103, 119: 100 red, 103 green and 119 blue on a 0 to 255 scale.

What is the complementary color of #646777?

The complementary color is #777464, found by rotating the hue 180° on the color wheel.

Is black or white text better on #646777?

White text. Black text has a contrast ratio of 3.75:1 and white text 5.6:1. WCAG asks for at least 4.5:1 for normal text.

#646777 color

#646777 rgb(100, 103, 119)

Shades of gray

The hex color #646777 is a grayish blue.

In the RGB color model it is made of 39.2% red, 40.4% green and 46.7% blue (100, 103, 119).

Its hue angle is 231°, with 9% saturation and 43% lightness. For print, the CMYK equivalent is 16% cyan, 13% magenta, 0% yellow and 53% black.

The closest named color is Alley Cat (#656874), a difference of 1.9 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 5.6:1).

#646777 color codes

HEX	`#646777`
RGB	`rgb(100, 103, 119)`
RGB percent	`rgb(39.2%, 40.4%, 46.7%)`
HSL	`hsl(231, 9%, 43%)`
HSV / HSB	`hsv(231, 16%, 47%)`
CMYK	`cmyk(16%, 13%, 0%, 53%)`
CIE LAB	`lab(43.86, 2.44, -9.32)`
CIE LCH	`lch(43.86, 9.64, 284.66)`
CIE XYZ	`xyz(13.435, 13.742, 19.394)`
Decimal	`6580087`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #646777, 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 #646777	Ratio	AA	AAA	AA large
Sample text	3.75:1	Fail	Fail	Pass
Sample text	5.6:1	Pass	Fail	Pass

#646777 as text on	Ratio	AA	AAA	AA large
Sample text	5.6:1	Pass	Fail	Pass
Sample text	3.75:1	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 #646777 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #646777; }
.text { color: #646777; }
.border { border: 2px solid #646777; }
.transparent { background-color: rgb(100 103 119 / 50%); }
.gradient { background: linear-gradient(to right, #646777, #6a6477); }

Background

Text color

Border

Similar colors

Closest common color name: Space Gray.

Questions

What color is #646777?: #646777 is a grayish blue, closest to the named color Alley Cat. It belongs to the gray family of colors.
What is the RGB value of #646777?: The RGB value is 100, 103, 119: 100 red, 103 green and 119 blue on a 0 to 255 scale.
What is the complementary color of #646777?: The complementary color is #777464, found by rotating the hue 180° on the color wheel.
Is black or white text better on #646777?: White text. Black text has a contrast ratio of 3.75:1 and white text 5.6:1. WCAG asks for at least 4.5:1 for normal text.