What color is #645E6B?

#645E6B is a gray, closest to the named color Smoky. It belongs to the gray family of colors.

What is the RGB value of #645E6B?

The RGB value is 100, 94, 107: 100 red, 94 green and 107 blue on a 0 to 255 scale.

What is the complementary color of #645E6B?

The complementary color is #656B5E, found by rotating the hue 180° on the color wheel.

Is black or white text better on #645E6B?

White text. Black text has a contrast ratio of 3.36:1 and white text 6.26:1. WCAG asks for at least 4.5:1 for normal text.

#645E6B color

#645E6B rgb(100, 94, 107)

Shades of gray

The hex color #645E6B is a gray.

In the RGB color model it is made of 39.2% red, 36.9% green and 42% blue (100, 94, 107).

Its hue angle is 268°, with 6% saturation and 39% lightness. For print, the CMYK equivalent is 7% cyan, 12% magenta, 0% yellow and 58% black.

The closest named color is Smoky (#605D6B), a difference of 1.6 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 6.26:1).

#645E6B color codes

HEX	`#645E6B`
RGB	`rgb(100, 94, 107)`
RGB percent	`rgb(39.2%, 36.9%, 42%)`
HSL	`hsl(268, 6%, 39%)`
HSV / HSB	`hsv(268, 12%, 42%)`
CMYK	`cmyk(7%, 12%, 0%, 58%)`
CIE LAB	`lab(40.86, 5.14, -6.52)`
CIE LCH	`lch(40.86, 8.3, 308.25)`
CIE XYZ	`xyz(11.912, 11.776, 15.553)`
Decimal	`6577771`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #645E6B, 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 #645E6B	Ratio	AA	AAA	AA large
Sample text	3.36:1	Fail	Fail	Pass
Sample text	6.26:1	Pass	Fail	Pass

#645E6B as text on	Ratio	AA	AAA	AA large
Sample text	6.26:1	Pass	Fail	Pass
Sample text	3.36:1	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 #645E6B looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #645e6b; }
.text { color: #645e6b; }
.border { border: 2px solid #645e6b; }
.transparent { background-color: rgb(100 94 107 / 50%); }
.gradient { background: linear-gradient(to right, #645e6b, #6b5e6b); }

Background

Text color

Border

Similar colors

Closest common color name: Dim Gray.

Questions

What color is #645E6B?: #645E6B is a gray, closest to the named color Smoky. It belongs to the gray family of colors.
What is the RGB value of #645E6B?: The RGB value is 100, 94, 107: 100 red, 94 green and 107 blue on a 0 to 255 scale.
What is the complementary color of #645E6B?: The complementary color is #656B5E, found by rotating the hue 180° on the color wheel.
Is black or white text better on #645E6B?: White text. Black text has a contrast ratio of 3.36:1 and white text 6.26:1. WCAG asks for at least 4.5:1 for normal text.