What color is #646D7D?

#646D7D is a grayish azure, closest to the named color Ashen Whisper. It belongs to the gray family of colors.

What is the RGB value of #646D7D?

The RGB value is 100, 109, 125: 100 red, 109 green and 125 blue on a 0 to 255 scale.

What is the complementary color of #646D7D?

The complementary color is #7D7464, found by rotating the hue 180° on the color wheel.

Is black or white text better on #646D7D?

White text. Black text has a contrast ratio of 4.03:1 and white text 5.22:1. WCAG asks for at least 4.5:1 for normal text.

#646D7D color

#646D7D rgb(100, 109, 125)

Shades of gray

The hex color #646D7D is a grayish azure.

In the RGB color model it is made of 39.2% red, 42.7% green and 49% blue (100, 109, 125).

Its hue angle is 218°, with 11% saturation and 44% lightness. For print, the CMYK equivalent is 20% cyan, 13% magenta, 0% yellow and 51% black.

The closest named color is Ashen Whisper (#646B7A), a difference of 1.1 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 5.22:1).

#646D7D color codes

HEX	`#646D7D`
RGB	`rgb(100, 109, 125)`
RGB percent	`rgb(39.2%, 42.7%, 49%)`
HSL	`hsl(218, 11%, 44%)`
HSV / HSB	`hsv(218, 20%, 49%)`
CMYK	`cmyk(20%, 13%, 0%, 51%)`
CIE LAB	`lab(45.81, 0.29, -10)`
CIE LCH	`lch(45.81, 10.01, 271.67)`
CIE XYZ	`xyz(14.425, 15.127, 21.558)`
Decimal	`6581629`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #646D7D, 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 #646D7D	Ratio	AA	AAA	AA large
Sample text	4.03:1	Fail	Fail	Pass
Sample text	5.22:1	Pass	Fail	Pass

#646D7D as text on	Ratio	AA	AAA	AA large
Sample text	5.22:1	Pass	Fail	Pass
Sample text	4.03:1	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 #646D7D looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #646d7d; }
.text { color: #646d7d; }
.border { border: 2px solid #646d7d; }
.transparent { background-color: rgb(100 109 125 / 50%); }
.gradient { background: linear-gradient(to right, #646d7d, #67647d); }

Background

Text color

Border

Similar colors

Closest common color name: Space Gray.

Questions

What color is #646D7D?: #646D7D is a grayish azure, closest to the named color Ashen Whisper. It belongs to the gray family of colors.
What is the RGB value of #646D7D?: The RGB value is 100, 109, 125: 100 red, 109 green and 125 blue on a 0 to 255 scale.
What is the complementary color of #646D7D?: The complementary color is #7D7464, found by rotating the hue 180° on the color wheel.
Is black or white text better on #646D7D?: White text. Black text has a contrast ratio of 4.03:1 and white text 5.22:1. WCAG asks for at least 4.5:1 for normal text.