#3f547a

Color #3f547a

A muted dark blue.

Closest named color Charcoal #36454f · ΔE 18.77 Nearest Tailwind class slate-600 #45556c · ΔE 4.7

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Conversions

HEX

#3f547a

RGB

rgb(63, 84, 122)

HSL

hsl(218.6, 31.9%, 36.3%)

HSV / HSB

hsv(218.6, 48.4%, 47.8%)

CMYK

cmyk(48.4%, 31.1%, 0%, 52.2%)

LAB

lab(35.6, 3.2, -24.05)

LCH

lch(35.6, 24.26, 277.58)

OKLCH

oklch(44.6%, 0.0681, 261.81)

HWB

hwb(218.6, 24.7%, 52.2%)

Harmony colors

Complementary

#7a653f

Analogous

#3f727a

#3f547a

#483f7a

Triadic

#3f547a

#7a3f54

#547a3f

Split-complementary

#3f547a

#7a483f

#727a3f

Tetradic

#3f547a

#653f7a

#7a653f

#547a3f

Square

#3f547a

#7a3f72

#7a653f

#3f7a48

Shades

Color #3f547a mixed toward black.

#354666

#2a3851

#202a3d

#151c29

#0b0e14

Tints

Color #3f547a mixed toward white.

#516d9e

#7089b5

#94a6c8

#b8c4da

#dbe1ed

Tones

Color #3f547a mixed toward gray.

#445675

#495770

#4e586b

#535a66

#585b61

Accessibility

Aa White text on this color

7.61:1

Aa Black text on this color

2.76:1

White text reads better on this background (7.61:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#494972 · ΔE 7.2

Deuteranopia

#484670 · ΔE 8.1

Tritanopia

#406c6a · ΔE 21.4

Achromatopsia

#545454 · ΔE 15.8

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

Code

CSS

background-color: #3f547a;

Tailwind (arbitrary value)

bg-[#3f547a]

Related colors

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Royal Blue #4169e1

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#3f547a (#3f547a) is rgb(63, 84, 122) in RGB.

No, #3f547a 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 #3f547a, or check how it holds up for accessibility.

Generate a palette → Check contrast