#645b81

Color #645b81

A muted medium blue.

Closest named color Slate Gray #708090 · ΔE 20.95 Nearest Tailwind class mauve-500 #79697b · ΔE 9.3

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Conversions

HEX

#645b81

RGB

rgb(100, 91, 129)

HSL

hsl(254.2, 17.3%, 43.1%)

HSV / HSB

hsv(254.2, 29.5%, 50.6%)

CMYK

cmyk(22.5%, 29.5%, 0%, 49.4%)

LAB

lab(40.86, 12.26, -19.96)

LCH

lch(40.86, 23.42, 301.56)

OKLCH

oklch(49.5%, 0.0607, 294.96)

HWB

hwb(254.2, 35.7%, 49.4%)

Harmony colors

Complementary

#78815b

Analogous

#5b6581

#645b81

#775b81

Triadic

#645b81

#81645b

#5b8164

Split-complementary

#645b81

#81775b

#65815b

Tetradic

#645b81

#815b78

#78815b

#5b8164

Square

#645b81

#815b65

#78815b

#5b8177

Shades

Color #645b81 mixed toward black.

#534c6b

#433d56

#322d40

#211e2b

#110f15

Tints

Color #645b81 mixed toward white.

#7b719b

#958eaf

#b0aac3

#cac6d7

#e5e3eb

Tones

Color #645b81 mixed toward gray.

#665e7e

#67617b

#696477

#6b6874

#6c6b71

Accessibility

Aa White text on this color

6.26:1

Aa Black text on this color

3.36:1

White text reads better on this background (6.26:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#606079 · ΔE 5.6

Deuteranopia

#616177 · ΔE 6.7

Tritanopia

#647271 · ΔE 21.3

Achromatopsia

#606060 · ΔE 16.7

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

Code

CSS

background-color: #645b81;

Tailwind (arbitrary value)

bg-[#645b81]

Related colors

Medium Purple #9370db

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Slate Blue #6a5acd

Navy #000080

Lavender #e6e6fa

Frequently asked questions

#645b81 (#645b81) is rgb(100, 91, 129) in RGB.

No, #645b81 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 #645b81, or check how it holds up for accessibility.

Generate a palette → Check contrast