What color is #66B5DF?

#66B5DF is a light, moderate azure, closest to the named color Malibu. It belongs to the blue family of colors.

What is the RGB value of #66B5DF?

The RGB value is 102, 181, 223: 102 red, 181 green and 223 blue on a 0 to 255 scale.

What is the complementary color of #66B5DF?

The complementary color is #DF9066, found by rotating the hue 180° on the color wheel.

Is black or white text better on #66B5DF?

Black text. Black text has a contrast ratio of 9.24:1 and white text 2.27:1. WCAG asks for at least 4.5:1 for normal text.

#66B5DF color

#66B5DF rgb(102, 181, 223)

Shades of blue

The hex color #66B5DF is a light, moderate azure.

In the RGB color model it is made of 40% red, 71% green and 87.5% blue (102, 181, 223).

Its hue angle is 201°, with 65% saturation and 64% lightness. For print, the CMYK equivalent is 54% cyan, 19% magenta, 0% yellow and 13% black.

The closest named color is Malibu (#66B7E1), a difference of 0.6 ΔE, which is barely visible.

Black text is the more readable choice on this background (contrast 9.24:1).

#66B5DF color codes

HEX	`#66B5DF`
RGB	`rgb(102, 181, 223)`
RGB percent	`rgb(40%, 71%, 87.5%)`
HSL	`hsl(201, 65%, 64%)`
HSV / HSB	`hsv(201, 54%, 87%)`
CMYK	`cmyk(54%, 19%, 0%, 13%)`
CIE LAB	`lab(70.31, -12.58, -28.51)`
CIE LCH	`lch(70.31, 31.16, 246.19)`
CIE XYZ	`xyz(35.318, 41.197, 75.888)`
Decimal	`6731231`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #66B5DF, 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 #66B5DF	Ratio	AA	AAA	AA large
Sample text	9.24:1	Pass	Pass	Pass
Sample text	2.27:1	Fail	Fail	Fail

#66B5DF as text on	Ratio	AA	AAA	AA large
Sample text	2.27:1	Fail	Fail	Fail
Sample text	9.24:1	Pass	Pass	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 #66B5DF looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #66b5df; }
.text { color: #66b5df; }
.border { border: 2px solid #66b5df; }
.transparent { background-color: rgb(102 181 223 / 50%); }
.gradient { background: linear-gradient(to right, #66b5df, #6679df); }

Background

Text color

Border

Similar colors

Closest common color name: Deep Sky Blue.

Questions

What color is #66B5DF?: #66B5DF is a light, moderate azure, closest to the named color Malibu. It belongs to the blue family of colors.
What is the RGB value of #66B5DF?: The RGB value is 102, 181, 223: 102 red, 181 green and 223 blue on a 0 to 255 scale.
What is the complementary color of #66B5DF?: The complementary color is #DF9066, found by rotating the hue 180° on the color wheel.
Is black or white text better on #66B5DF?: Black text. Black text has a contrast ratio of 9.24:1 and white text 2.27:1. WCAG asks for at least 4.5:1 for normal text.