#3f427c

Color #3f427c

A muted dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 13.5 Nearest Tailwind class blue-900 #1c398e · ΔE 6.8

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Conversions

HEX

#3f427c

RGB

rgb(63, 66, 124)

HSL

hsl(237, 32.6%, 36.7%)

HSV / HSB

hsv(237, 49.2%, 48.6%)

CMYK

cmyk(49.2%, 46.8%, 0%, 51.4%)

LAB

lab(30.42, 15.66, -33.47)

LCH

lch(30.42, 36.95, 295.07)

OKLCH

oklch(40.6%, 0.0961, 278.98)

HWB

hwb(237, 24.7%, 51.4%)

Harmony colors

Complementary

#7c793f

Analogous

#3f617c

#3f427c

#5b3f7c

Triadic

#3f427c

#7c3f42

#427c3f

Split-complementary

#3f427c

#7c5b3f

#617c3f

Tetradic

#3f427c

#793f7c

#7c793f

#427c3f

Square

#3f427c

#7c3f61

#7c793f

#3f7c5b

Shades

Color #3f427c mixed toward black.

#353767

#2a2c53

#20213e

#151629

#0b0b15

Tints

Color #3f427c mixed toward white.

#5155a0

#7074b6

#9497c9

#b8b9db

#dbdced

Tones

Color #3f427c mixed toward gray.

#444777

#494b72

#4e506d

#535468

#595963

Accessibility

Aa White text on this color

9.2:1

Aa Black text on this color

2.28:1

White text reads better on this background (9.2:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#404071 · ΔE 2.5

Deuteranopia

#40406e · ΔE 3.2

Tritanopia

#3f6866 · ΔE 26.6

Achromatopsia

#484848 · ΔE 20.9

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

Code

CSS

background-color: #3f427c;

Tailwind (arbitrary value)

bg-[#3f427c]

Related colors

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Medium Blue #0000cd

Frequently asked questions

#3f427c (#3f427c) is rgb(63, 66, 124) in RGB.

No, #3f427c 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.

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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 #3f427c, or check how it holds up for accessibility.

Generate a palette → Check contrast