#646aaa

Color #646aaa

A muted medium blue.

Closest named color Steel Blue #4682b4 · ΔE 19.47 Nearest Tailwind class slate-500 #62748e · ΔE 7.9

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

Conversions

HEX

#646aaa

RGB

rgb(100, 106, 170)

HSL

hsl(234.9, 29.2%, 52.9%)

HSV / HSB

hsv(234.9, 41.2%, 66.7%)

CMYK

cmyk(41.2%, 37.6%, 0%, 33.3%)

LAB

lab(46.87, 14.35, -35.04)

LCH

lch(46.87, 37.86, 292.27)

OKLCH

oklch(54.7%, 0.0996, 278.49)

HWB

hwb(234.9, 39.2%, 33.3%)

Harmony colors

Complementary

#aaa464

Analogous

#648daa

#646aaa

#8164aa

Triadic

#646aaa

#aa646a

#6aaa64

Split-complementary

#646aaa

#aa8164

#8daa64

Tetradic

#646aaa

#a464aa

#aaa464

#6aaa64

Square

#646aaa

#aa648d

#aaa464

#64aa81

Shades

Color #646aaa mixed toward black.

#505591

#404474

#303357

#20223a

#10111d

Tints

Color #646aaa mixed toward white.

#7e83b8

#989cc6

#b1b4d4

#cbcde3

#e5e6f1

Tones

Color #646aaa mixed toward gray.

#6a6fa4

#70739e

#757898

#7b7d93

#81828d

Accessibility

Aa White text on this color

5.02:1

Aa Black text on this color

4.18:1

White text reads better on this background (5.02:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#67679e · ΔE 3

Deuteranopia

#66669a · ΔE 3.7

Tritanopia

#649390 · ΔE 27.6

Achromatopsia

#6f6f6f · ΔE 21

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

Code

CSS

background-color: #646aaa;

Tailwind (arbitrary value)

bg-[#646aaa]

Related colors

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Medium Blue #0000cd

Frequently asked questions

#646aaa (#646aaa) is rgb(100, 106, 170) in RGB.

No, #646aaa 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.

Try it → Accessibility

Contrast Checker

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

Try it → Generators

Palette Generator

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

Try it →

Build something with this color

Generate a full palette from #646aaa, or check how it holds up for accessibility.

Generate a palette → Check contrast