#3f4172

Color #3f4172

A muted dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 18.8 Nearest Tailwind class blue-900 #1c398e · ΔE 8.4

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

Conversions

HEX

#3f4172

RGB

rgb(63, 65, 114)

HSL

hsl(237.6, 28.8%, 34.7%)

HSV / HSB

hsv(237.6, 44.7%, 44.7%)

CMYK

cmyk(44.7%, 43%, 0%, 55.3%)

LAB

lab(29.54, 13.04, -28.57)

LCH

lch(29.54, 31.41, 294.53)

OKLCH

oklch(39.8%, 0.0819, 280.2)

HWB

hwb(237.6, 24.7%, 55.3%)

Harmony colors

Complementary

#72703f

Analogous

#3f5b72

#3f4172

#563f72

Triadic

#3f4172

#723f41

#41723f

Split-complementary

#3f4172

#72563f

#5b723f

Tetradic

#3f4172

#703f72

#72703f

#41723f

Square

#3f4172

#723f5b

#72703f

#3f7256

Shades

Color #3f4172 mixed toward black.

#35365f

#2a2b4c

#202139

#151626

#0b0b13

Tints

Color #3f4172 mixed toward white.

#535596

#7073b0

#9496c4

#b8b9d7

#dbdceb

Tones

Color #3f4172 mixed toward gray.

#43456e

#474969

#4c4d65

#505161

#54555d

Accessibility

Aa White text on this color

9.5:1

Aa Black text on this color

2.21:1

White text reads better on this background (9.5:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#404069 · ΔE 2.3

Deuteranopia

#404066 · ΔE 3.2

Tritanopia

#3f615f · ΔE 25.3

Achromatopsia

#464646 · ΔE 19.2

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

Code

CSS

background-color: #3f4172;

Tailwind (arbitrary value)

bg-[#3f4172]

Related colors

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Medium Blue #0000cd

Frequently asked questions

#3f4172 (#3f4172) is rgb(63, 65, 114) in RGB.

No, #3f4172 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 #3f4172, or check how it holds up for accessibility.

Generate a palette → Check contrast