#3f4666

Color #3f4666

A muted dark blue.

Closest named color Charcoal #36454f · ΔE 14.99 Nearest Tailwind class slate-700 #314158 · ΔE 6.2

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Conversions

HEX

#3f4666

RGB

rgb(63, 70, 102)

HSL

hsl(229.2, 23.6%, 32.4%)

HSV / HSB

hsv(229.2, 38.2%, 40%)

CMYK

cmyk(38.2%, 31.4%, 0%, 60%)

LAB

lab(30.39, 5.94, -19.63)

LCH

lch(30.39, 20.51, 286.84)

OKLCH

oklch(40.2%, 0.0548, 274.18)

HWB

hwb(229.2, 24.7%, 60%)

Harmony colors

Complementary

#665f3f

Analogous

#3f5a66

#3f4666

#4c3f66

Triadic

#3f4666

#663f46

#46663f

Split-complementary

#3f4666

#664c3f

#5a663f

Tetradic

#3f4666

#5f3f66

#665f3f

#46663f

Square

#3f4666

#663f5a

#665f3f

#3f664c

Shades

Color #3f4666 mixed toward black.

#353a55

#2a2f44

#202333

#151722

#0b0c11

Tints

Color #3f4666 mixed toward white.

#555f8a

#717ba7

#949cbd

#b8bdd3

#dbdee9

Tones

Color #3f4666 mixed toward gray.

#424863

#464a60

#494c5c

#4c4e59

#4f5156

Accessibility

Aa White text on this color

9.21:1

Aa Black text on this color

2.28:1

White text reads better on this background (9.21:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#42425f · ΔE 3

Deuteranopia

#42415e · ΔE 3.5

Tritanopia

#3f5a59 · ΔE 20.2

Achromatopsia

#484848 · ΔE 14.5

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

Code

CSS

background-color: #3f4666;

Tailwind (arbitrary value)

bg-[#3f4666]

Related colors

Royal Blue #4169e1

Cornflower Blue #6495ed

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Frequently asked questions

#3f4666 (#3f4666) is rgb(63, 70, 102) in RGB.

No, #3f4666 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 #3f4666, or check how it holds up for accessibility.

Generate a palette → Check contrast