What color is #666C5B?

#666C5B 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 #666C5B?

The RGB value is 102, 108, 91: 102 red, 108 green and 91 blue on a 0 to 255 scale.

What is the complementary color of #666C5B?

The complementary color is #615B6C, found by rotating the hue 180° on the color wheel.

Is black or white text better on #666C5B?

White text. Black text has a contrast ratio of 3.86:1 and white text 5.44:1. WCAG asks for at least 4.5:1 for normal text.

#666C5B color

#666C5B rgb(102, 108, 91)

Shades of gray

The hex color #666C5B is a grayish yellow-green.

In the RGB color model it is made of 40% red, 42.4% green and 35.7% blue (102, 108, 91).

Its hue angle is 81°, with 9% saturation and 39% lightness. For print, the CMYK equivalent is 6% cyan, 0% magenta, 16% yellow and 58% black.

The closest named color is Italian Basil (#5F6957), a difference of 2.4 ΔE, a small difference.

White text is the more readable choice on this background (contrast 5.44:1).

#666C5B color codes

HEX	`#666C5B`
RGB	`rgb(102, 108, 91)`
RGB percent	`rgb(40%, 42.4%, 35.7%)`
HSL	`hsl(81, 9%, 39%)`
HSV / HSB	`hsv(81, 16%, 42%)`
CMYK	`cmyk(6%, 0%, 16%, 58%)`
CIE LAB	`lab(44.67, -5.68, 8.75)`
CIE LCH	`lch(44.67, 10.43, 122.99)`
CIE XYZ	`xyz(12.73, 14.305, 11.986)`
Decimal	`6712411`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #666C5B, 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 #666C5B	Ratio	AA	AAA	AA large
Sample text	3.86:1	Fail	Fail	Pass
Sample text	5.44:1	Pass	Fail	Pass

#666C5B as text on	Ratio	AA	AAA	AA large
Sample text	5.44:1	Pass	Fail	Pass
Sample text	3.86:1	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 #666C5B looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #666c5b; }
.text { color: #666c5b; }
.border { border: 2px solid #666c5b; }
.transparent { background-color: rgb(102 108 91 / 50%); }
.gradient { background: linear-gradient(to right, #666c5b, #5e6c5b); }

Background

Text color

Border

Similar colors

Closest common color name: Ebony.

Questions

What color is #666C5B?: #666C5B 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 #666C5B?: The RGB value is 102, 108, 91: 102 red, 108 green and 91 blue on a 0 to 255 scale.
What is the complementary color of #666C5B?: The complementary color is #615B6C, found by rotating the hue 180° on the color wheel.
Is black or white text better on #666C5B?: White text. Black text has a contrast ratio of 3.86:1 and white text 5.44:1. WCAG asks for at least 4.5:1 for normal text.