#6663b3

Color #6663b3

A muted medium blue.

Closest named color Dark Slate Blue #483d8b · ΔE 15.39 Nearest Tailwind class slate-500 #62748e · ΔE 9.4

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

Conversions

HEX

#6663b3

RGB

rgb(102, 99, 179)

HSL

hsl(242.2, 34.5%, 54.5%)

HSV / HSB

hsv(242.2, 44.7%, 70.2%)

CMYK

cmyk(43%, 44.7%, 0%, 29.8%)

LAB

lab(45.64, 21.85, -42.24)

LCH

lch(45.64, 47.56, 297.35)

OKLCH

oklch(54%, 0.1226, 283.2)

HWB

hwb(242.2, 38.8%, 29.8%)

Harmony colors

Complementary

#b0b363

Analogous

#6388b3

#6663b3

#8e63b3

Triadic

#6663b3

#b36663

#63b366

Split-complementary

#6663b3

#b38e63

#88b363

Tetradic

#6663b3

#b363b0

#b0b363

#63b366

Square

#6663b3

#b36388

#b0b363

#63b38e

Shades

Color #6663b3 mixed toward black.

#4f4c9c

#3f3d7d

#2f2e5d

#201e3e

#100f1f

Tints

Color #6663b3 mixed toward white.

#7f7dc0

#9997cc

#b2b1d9

#cccbe6

#e5e5f2

Tones

Color #6663b3 mixed toward gray.

#6c6aac

#7270a6

#78779f

#7f7e98

#858492

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

#6565a4 · ΔE 3.1

Deuteranopia

#6565a0 · ΔE 3.9

Tritanopia

#669794 · ΔE 30.2

Achromatopsia

#6c6c6c · ΔE 23.4

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

Code

CSS

background-color: #6663b3;

Tailwind (arbitrary value)

bg-[#6663b3]

Related colors

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Medium Blue #0000cd

Frequently asked questions

#6663b3 (#6663b3) is rgb(102, 99, 179) in RGB.

No, #6663b3 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 #6663b3, or check how it holds up for accessibility.

Generate a palette → Check contrast