#646a8f

Color #646a8f

A muted medium blue.

Closest named color Slate Gray #708090 · ΔE 15.48 Nearest Tailwind class slate-500 #62748e · ΔE 7.2

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Conversions

HEX

#646a8f

RGB

rgb(100, 106, 143)

HSL

hsl(231.6, 17.7%, 47.6%)

HSV / HSB

hsv(231.6, 30.1%, 56.1%)

CMYK

cmyk(30.1%, 25.9%, 0%, 43.9%)

LAB

lab(45.63, 6.72, -21.02)

LCH

lch(45.63, 22.07, 287.73)

OKLCH

oklch(53.4%, 0.0585, 277.06)

HWB

hwb(231.6, 39.2%, 43.9%)

Harmony colors

Complementary

#8f8964

Analogous

#647f8f

#646a8f

#73648f

Triadic

#646a8f

#8f646a

#6a8f64

Split-complementary

#646a8f

#8f7364

#7f8f64

Tetradic

#646a8f

#89648f

#8f8964

#6a8f64

Square

#646a8f

#8f647f

#8f8964

#648f73

Shades

Color #646a8f mixed toward black.

#535877

#43475f

#323547

#212330

#111218

Tints

Color #646a8f mixed toward white.

#7c81a3

#969bb6

#b0b4c8

#cbcdda

#e5e6ed

Tones

Color #646a8f mixed toward gray.

#676c8b

#6b6f88

#6f7284

#727481

#76777d

Accessibility

Aa White text on this color

5.25:1

Aa Black text on this color

4:1

White text reads better on this background (5.25:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#676787 · ΔE 2.8

Deuteranopia

#666685 · ΔE 3.2

Tritanopia

#64817f · ΔE 21.6

Achromatopsia

#6c6c6c · ΔE 15.3

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

Code

CSS

background-color: #646a8f;

Tailwind (arbitrary value)

bg-[#646a8f]

Related colors

Royal Blue #4169e1

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Frequently asked questions

#646a8f (#646a8f) is rgb(100, 106, 143) in RGB.

No, #646a8f is not web-safe. The nearest web-safe colors are among its tones and shades below.

Related tools

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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 #646a8f, or check how it holds up for accessibility.

Generate a palette → Check contrast