#665b80

Color #665b80

A muted medium blue.

Closest named color Slate Gray #708090 · ΔE 20.8 Nearest Tailwind class mauve-500 #79697b · ΔE 8.8

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Conversions

HEX

#665b80

RGB

rgb(102, 91, 128)

HSL

hsl(257.8, 16.9%, 42.9%)

HSV / HSB

hsv(257.8, 28.9%, 50.2%)

CMYK

cmyk(20.3%, 28.9%, 0%, 49.8%)

LAB

lab(41, 12.68, -19.11)

LCH

lch(41, 22.93, 303.57)

OKLCH

oklch(49.6%, 0.0595, 297.86)

HWB

hwb(257.8, 35.7%, 49.8%)

Harmony colors

Complementary

#75805b

Analogous

#5b6280

#665b80

#785b80

Triadic

#665b80

#80665b

#5b8066

Split-complementary

#665b80

#80785b

#62805b

Tetradic

#665b80

#805b75

#75805b

#5b8066

Square

#665b80

#805b62

#75805b

#5b8078

Shades

Color #665b80 mixed toward black.

#554c6b

#443d55

#332d40

#221e2b

#110f15

Tints

Color #665b80 mixed toward white.

#7d719a

#978eae

#b1aac3

#cbc6d7

#e5e3eb

Tones

Color #665b80 mixed toward gray.

#675e7d

#68617a

#6a6477

#6b6774

#6c6a70

Accessibility

Aa White text on this color

6.23:1

Aa Black text on this color

3.37:1

White text reads better on this background (6.23:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#616178 · ΔE 6.5

Deuteranopia

#626376 · ΔE 8.3

Tritanopia

#657270 · ΔE 21.6

Achromatopsia

#616161 · ΔE 16.7

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

Code

CSS

background-color: #665b80;

Tailwind (arbitrary value)

bg-[#665b80]

Related colors

Medium Purple #9370db

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Slate Blue #6a5acd

Rebecca Purple #663399

Blue Violet #8a2be2

Frequently asked questions

#665b80 (#665b80) is rgb(102, 91, 128) in RGB.

No, #665b80 is not one of the 216 web-safe colors — for that, every RGB channel would have to be a multiple of 51.

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 #665b80, or check how it holds up for accessibility.

Generate a palette → Check contrast