What color is #646A7A?

#646A7A is a grayish blue, closest to the named color Ashen Whisper. It belongs to the gray family of colors.

What is the RGB value of #646A7A?

The RGB value is 100, 106, 122: 100 red, 106 green and 122 blue on a 0 to 255 scale.

What is the complementary color of #646A7A?

The complementary color is #7A7464, found by rotating the hue 180° on the color wheel.

Is black or white text better on #646A7A?

White text. Black text has a contrast ratio of 3.88:1 and white text 5.41:1. WCAG asks for at least 4.5:1 for normal text.

#646A7A color

#646A7A rgb(100, 106, 122)

Shades of gray

The hex color #646A7A is a grayish blue.

In the RGB color model it is made of 39.2% red, 41.6% green and 47.8% blue (100, 106, 122).

Its hue angle is 224°, with 10% saturation and 44% lightness. For print, the CMYK equivalent is 18% cyan, 13% magenta, 0% yellow and 52% black.

The closest named color is Ashen Whisper (#646B7A), a difference of 0.9 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 5.41:1).

#646A7A color codes

HEX	`#646A7A`
RGB	`rgb(100, 106, 122)`
RGB percent	`rgb(39.2%, 41.6%, 47.8%)`
HSL	`hsl(224, 10%, 44%)`
HSV / HSB	`hsv(224, 18%, 48%)`
CMYK	`cmyk(18%, 13%, 0%, 52%)`
CIE LAB	`lab(44.83, 1.36, -9.67)`
CIE LCH	`lch(44.83, 9.76, 277.98)`
CIE XYZ	`xyz(13.922, 14.422, 20.459)`
Decimal	`6580858`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #646A7A, 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 #646A7A	Ratio	AA	AAA	AA large
Sample text	3.88:1	Fail	Fail	Pass
Sample text	5.41:1	Pass	Fail	Pass

#646A7A as text on	Ratio	AA	AAA	AA large
Sample text	5.41:1	Pass	Fail	Pass
Sample text	3.88:1	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 #646A7A looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #646a7a; }
.text { color: #646a7a; }
.border { border: 2px solid #646a7a; }
.transparent { background-color: rgb(100 106 122 / 50%); }
.gradient { background: linear-gradient(to right, #646a7a, #69647a); }

Background

Text color

Border

Similar colors

Closest common color name: Space Gray.

Questions

What color is #646A7A?: #646A7A is a grayish blue, closest to the named color Ashen Whisper. It belongs to the gray family of colors.
What is the RGB value of #646A7A?: The RGB value is 100, 106, 122: 100 red, 106 green and 122 blue on a 0 to 255 scale.
What is the complementary color of #646A7A?: The complementary color is #7A7464, found by rotating the hue 180° on the color wheel.
Is black or white text better on #646A7A?: White text. Black text has a contrast ratio of 3.88:1 and white text 5.41:1. WCAG asks for at least 4.5:1 for normal text.