#6663a1

Color #6663a1

A muted medium blue.

Closest named color Dark Slate Blue #483d8b · ΔE 18.99 Nearest Tailwind class slate-500 #62748e · ΔE 9.6

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

Conversions

HEX

#6663a1

RGB

rgb(102, 99, 161)

HSL

hsl(242.9, 24.8%, 51%)

HSV / HSB

hsv(242.9, 38.5%, 63.1%)

CMYK

cmyk(36.6%, 38.5%, 0%, 36.9%)

LAB

lab(44.69, 16.61, -33.16)

LCH

lch(44.69, 37.09, 296.61)

OKLCH

oklch(53%, 0.0962, 284.82)

HWB

hwb(242.9, 38.8%, 36.9%)

Harmony colors

Complementary

#9ea163

Analogous

#637fa1

#6663a1

#8563a1

Triadic

#6663a1

#a16663

#63a166

Split-complementary

#6663a1

#a18563

#7fa163

Tetradic

#6663a1

#a1639e

#9ea163

#63a166

Square

#6663a1

#a1637f

#9ea163

#63a185

Shades

Color #6663a1 mixed toward black.

#545187

#43416c

#323151

#222136

#11101b

Tints

Color #6663a1 mixed toward white.

#807db1

#9997c0

#b3b1d0

#cccbe0

#e6e5ef

Tones

Color #6663a1 mixed toward gray.

#6b689c

#6f6d97

#747392

#79788c

#7d7d87

Accessibility

Aa White text on this color

5.43:1

Aa Black text on this color

3.86:1

White text reads better on this background (5.43:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#656595 · ΔE 3

Deuteranopia

#656592 · ΔE 3.8

Tritanopia

#668a88 · ΔE 26.7

Achromatopsia

#6a6a6a · ΔE 21

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

Code

CSS

background-color: #6663a1;

Tailwind (arbitrary value)

bg-[#6663a1]

Related colors

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Medium Blue #0000cd

Frequently asked questions

#6663a1 (#6663a1) is rgb(102, 99, 161) in RGB.

No, #6663a1 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.

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 #6663a1, or check how it holds up for accessibility.

Generate a palette → Check contrast