#3f567f

Color #3f567f

A muted dark blue.

Closest named color Steel Blue #4682b4 · ΔE 18.86 Nearest Tailwind class slate-600 #45556c · ΔE 5.3

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Conversions

HEX

#3f567f

RGB

rgb(63, 86, 127)

HSL

hsl(218.4, 33.7%, 37.3%)

HSV / HSB

hsv(218.4, 50.4%, 49.8%)

CMYK

cmyk(50.4%, 32.3%, 0%, 50.2%)

LAB

lab(36.45, 3.55, -25.8)

LCH

lch(36.45, 26.04, 277.83)

OKLCH

oklch(45.3%, 0.0732, 261.44)

HWB

hwb(218.4, 24.7%, 50.2%)

Harmony colors

Complementary

#7f683f

Analogous

#3f767f

#3f567f

#483f7f

Triadic

#3f567f

#7f3f56

#567f3f

Split-complementary

#3f567f

#7f483f

#767f3f

Tetradic

#3f567f

#683f7f

#7f683f

#567f3f

Square

#3f567f

#7f3f76

#7f683f

#3f7f48

Shades

Color #3f567f mixed toward black.

#35486a

#2a3955

#202b40

#151d2a

#0b0e15

Tints

Color #3f567f mixed toward white.

#516ea3

#708ab8

#94a8ca

#b8c5dc

#dbe2ed

Tones

Color #3f567f mixed toward gray.

#44587a

#4a5974

#4f5b6f

#545c6a

#5a5e64

Accessibility

Aa White text on this color

7.37:1

Aa Black text on this color

2.85:1

White text reads better on this background (7.37:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#4a4a77 · ΔE 7.4

Deuteranopia

#494775 · ΔE 8.3

Tritanopia

#40706e · ΔE 22.2

Achromatopsia

#565656 · ΔE 16.5

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

Code

CSS

background-color: #3f567f;

Tailwind (arbitrary value)

bg-[#3f567f]

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

#3f567f (#3f567f) is rgb(63, 86, 127) in RGB.

No, #3f567f 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 #3f567f, or check how it holds up for accessibility.

Generate a palette → Check contrast