#664fbe

Color #664fbe

A moderately saturated medium blue.

Closest named color Slate Blue #6a5acd · ΔE 4.73 Nearest Tailwind class indigo-600 #4f39f6 · ΔE 8.5

Open in Palette generator Color wheel Color mixer Contrast checker Blindness simulator Gradient

Conversions

HEX

#664fbe

RGB

rgb(102, 79, 190)

HSL

hsl(252.4, 46.1%, 52.7%)

HSV / HSB

hsv(252.4, 58.4%, 74.5%)

CMYK

cmyk(46.3%, 58.4%, 0%, 25.5%)

LAB

lab(41.43, 37.28, -55.41)

LCH

lch(41.43, 66.78, 303.93)

OKLCH

oklch(51.1%, 0.1669, 288.59)

HWB

hwb(252.4, 31%, 25.5%)

Harmony colors

Complementary

#a7be4f

Analogous

#4f6fbe

#664fbe

#9d4fbe

Triadic

#664fbe

#be664f

#4fbe66

Split-complementary

#664fbe

#be9d4f

#6fbe4f

Tetradic

#664fbe

#be4fa7

#a7be4f

#4fbe66

Square

#664fbe

#be4f6f

#a7be4f

#4fbe9d

Shades

Color #664fbe mixed toward black.

#523ca4

#413083

#312462

#211841

#100c21

Tints

Color #664fbe mixed toward white.

#7f6cc9

#998ad4

#b2a7de

#ccc4e9

#e5e2f4

Tones

Color #664fbe mixed toward gray.

#6b58b5

#7161ab

#766ba2

#7c7499

#817d90

Accessibility

Aa White text on this color

6.13:1

Aa Black text on this color

3.43:1

White text reads better on this background (6.13:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#5d5dab · ΔE 6.2

Deuteranopia

#5e60a7 · ΔE 7.5

Tritanopia

#659b97 · ΔE 35.8

Achromatopsia

#626262 · ΔE 26.8

Left half is the original, right half is the simulated appearance. See all 8 vision types →

Code

CSS

background-color: #664fbe;

Tailwind (arbitrary value)

bg-[#664fbe]

Related colors

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Slate Blue #6a5acd

Medium Purple #9370db

Navy #000080

Lavender #e6e6fa

Frequently asked questions

#664fbe (#664fbe) is rgb(102, 79, 190) in RGB.

No, #664fbe is not web-safe. The nearest web-safe colors are among its tones and shades below.

Related tools

Colors

HEX to RGB Converter

Convert any HEX color code to its RGB and HSL equivalents, live, with copy-to-clipboard values.

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Contrast Checker

Check the WCAG contrast ratio between any two colors, live, with AA/AAA pass-fail results.

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Palette Generator

Generate complementary, analogous, triadic, split-complementary, tetradic, square, and monochromatic palettes from any base color.

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Build something with this color

Generate a full palette from #664fbe, or check how it holds up for accessibility.

Generate a palette → Check contrast