What color is #646CA0?

#646CA0 is a grayish blue, closest to the named color Twinkle Night. It belongs to the blue family of colors.

What is the RGB value of #646CA0?

The RGB value is 100, 108, 160: 100 red, 108 green and 160 blue on a 0 to 255 scale.

What is the complementary color of #646CA0?

The complementary color is #A09864, found by rotating the hue 180° on the color wheel.

Is black or white text better on #646CA0?

White text. Black text has a contrast ratio of 4.19:1 and white text 5.01:1. WCAG asks for at least 4.5:1 for normal text.

#646CA0 color

#646CA0 rgb(100, 108, 160)

Shades of blue

The hex color #646CA0 is a grayish blue.

In the RGB color model it is made of 39.2% red, 42.4% green and 62.7% blue (100, 108, 160).

Its hue angle is 232°, with 24% saturation and 51% lightness. For print, the CMYK equivalent is 38% cyan, 32% magenta, 0% yellow and 37% black.

The closest named color is Twinkle Night (#636CA8), a difference of 1.7 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 5.01:1).

#646CA0 color codes

HEX	`#646CA0`
RGB	`rgb(100, 108, 160)`
RGB percent	`rgb(39.2%, 42.4%, 62.7%)`
HSL	`hsl(232, 24%, 51%)`
HSV / HSB	`hsv(232, 38%, 63%)`
CMYK	`cmyk(38%, 32%, 0%, 37%)`
CIE LAB	`lab(46.94, 10.22, -29.06)`
CIE LCH	`lch(46.94, 30.81, 289.37)`
CIE XYZ	`xyz(16.961, 15.972, 35.44)`
Decimal	`6581408`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #646CA0, 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 #646CA0	Ratio	AA	AAA	AA large
Sample text	4.19:1	Fail	Fail	Pass
Sample text	5.01:1	Pass	Fail	Pass

#646CA0 as text on	Ratio	AA	AAA	AA large
Sample text	5.01:1	Pass	Fail	Pass
Sample text	4.19:1	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 #646CA0 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #646ca0; }
.text { color: #646ca0; }
.border { border: 2px solid #646ca0; }
.transparent { background-color: rgb(100 108 160 / 50%); }
.gradient { background: linear-gradient(to right, #646ca0, #7a64a0); }

Background

Text color

Border

Similar colors

Closest common color name: Royal Purple.

Questions

What color is #646CA0?: #646CA0 is a grayish blue, closest to the named color Twinkle Night. It belongs to the blue family of colors.
What is the RGB value of #646CA0?: The RGB value is 100, 108, 160: 100 red, 108 green and 160 blue on a 0 to 255 scale.
What is the complementary color of #646CA0?: The complementary color is #A09864, found by rotating the hue 180° on the color wheel.
Is black or white text better on #646CA0?: White text. Black text has a contrast ratio of 4.19:1 and white text 5.01:1. WCAG asks for at least 4.5:1 for normal text.