#3f4a82

Color #3f4a82

A muted dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 16.58 Nearest Tailwind class blue-900 #1c398e · ΔE 7.2

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

Conversions

HEX

#3f4a82

RGB

rgb(63, 74, 130)

HSL

hsl(230.1, 34.7%, 37.8%)

HSV / HSB

hsv(230.1, 51.5%, 51%)

CMYK

cmyk(51.5%, 43.1%, 0%, 49%)

LAB

lab(33.06, 12.36, -32.99)

LCH

lch(33.06, 35.23, 290.54)

OKLCH

oklch(42.8%, 0.0937, 273.43)

HWB

hwb(230.1, 24.7%, 49%)

Harmony colors

Complementary

#82773f

Analogous

#3f6b82

#3f4a82

#553f82

Triadic

#3f4a82

#823f4a

#4a823f

Split-complementary

#3f4a82

#82553f

#6b823f

Tetradic

#3f4a82

#773f82

#82773f

#4a823f

Square

#3f4a82

#823f6b

#82773f

#3f8255

Shades

Color #3f4a82 mixed toward black.

#343e6c

#2a3157

#1f2541

#15192b

#0a0c16

Tints

Color #3f4a82 mixed toward white.

#505ea5

#717dba

#949dcb

#b8bedc

#dbdeee

Tones

Color #3f4a82 mixed toward gray.

#454e7c

#4a5177

#505571

#55596c

#5b5d66

Accessibility

Aa White text on this color

8.36:1

Aa Black text on this color

2.51:1

White text reads better on this background (8.36:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#444477 · ΔE 3.7

Deuteranopia

#434375 · ΔE 4

Tritanopia

#406e6c · ΔE 26.2

Achromatopsia

#4e4e4e · ΔE 20.2

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

Code

CSS

background-color: #3f4a82;

Tailwind (arbitrary value)

bg-[#3f4a82]

Related colors

Royal Blue #4169e1

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Frequently asked questions

#3f4a82 (#3f4a82) is rgb(63, 74, 130) in RGB.

No, #3f4a82 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 #3f4a82, or check how it holds up for accessibility.

Generate a palette → Check contrast