What color is #646B57?

#646B57 is a grayish yellow-green, closest to the named color Italian Basil. It belongs to the gray family of colors.

What is the RGB value of #646B57?

The RGB value is 100, 107, 87: 100 red, 107 green and 87 blue on a 0 to 255 scale.

What is the complementary color of #646B57?

The complementary color is #5E576B, found by rotating the hue 180° on the color wheel.

Is black or white text better on #646B57?

White text. Black text has a contrast ratio of 3.78:1 and white text 5.55:1. WCAG asks for at least 4.5:1 for normal text.

#646B57 color

#646B57 rgb(100, 107, 87)

Shades of gray

The hex color #646B57 is a grayish yellow-green.

In the RGB color model it is made of 39.2% red, 42% green and 34.1% blue (100, 107, 87).

Its hue angle is 81°, with 10% saturation and 38% lightness. For print, the CMYK equivalent is 7% cyan, 0% magenta, 19% yellow and 58% black.

The closest named color is Italian Basil (#5F6957), a difference of 1.8 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 5.55:1).

#646B57 color codes

HEX	`#646B57`
RGB	`rgb(100, 107, 87)`
RGB percent	`rgb(39.2%, 42%, 34.1%)`
HSL	`hsl(81, 10%, 38%)`
HSV / HSB	`hsv(81, 19%, 42%)`
CMYK	`cmyk(7%, 0%, 19%, 58%)`
CIE LAB	`lab(44.11, -6.64, 10.33)`
CIE LCH	`lch(44.11, 12.28, 122.72)`
CIE XYZ	`xyz(12.233, 13.913, 11.056)`
Decimal	`6581079`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #646B57, 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 #646B57	Ratio	AA	AAA	AA large
Sample text	3.78:1	Fail	Fail	Pass
Sample text	5.55:1	Pass	Fail	Pass

#646B57 as text on	Ratio	AA	AAA	AA large
Sample text	5.55:1	Pass	Fail	Pass
Sample text	3.78:1	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 #646B57 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #646b57; }
.text { color: #646b57; }
.border { border: 2px solid #646b57; }
.transparent { background-color: rgb(100 107 87 / 50%); }
.gradient { background: linear-gradient(to right, #646b57, #5a6b57); }

Background

Text color

Border

Similar colors

Closest common color name: Ebony.

Questions

What color is #646B57?: #646B57 is a grayish yellow-green, closest to the named color Italian Basil. It belongs to the gray family of colors.
What is the RGB value of #646B57?: The RGB value is 100, 107, 87: 100 red, 107 green and 87 blue on a 0 to 255 scale.
What is the complementary color of #646B57?: The complementary color is #5E576B, found by rotating the hue 180° on the color wheel.
Is black or white text better on #646B57?: White text. Black text has a contrast ratio of 3.78:1 and white text 5.55:1. WCAG asks for at least 4.5:1 for normal text.