#3f5898

Color #3f5898

A moderately saturated medium blue.

Closest named color Dark Slate Blue #483d8b · ΔE 17.54 Nearest Tailwind class slate-600 #45556c · ΔE 8.4

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

Conversions

HEX

#3f5898

RGB

rgb(63, 88, 152)

HSL

hsl(223.1, 41.4%, 42.2%)

HSV / HSB

hsv(223.1, 58.6%, 59.6%)

CMYK

cmyk(58.6%, 42.1%, 0%, 40.4%)

LAB

lab(38.38, 10.77, -37.95)

LCH

lch(38.38, 39.45, 285.84)

OKLCH

oklch(47.3%, 0.108, 266.28)

HWB

hwb(223.1, 24.7%, 40.4%)

Harmony colors

Complementary

#987f3f

Analogous

#3f8598

#3f5898

#533f98

Triadic

#3f5898

#983f58

#58983f

Split-complementary

#3f5898

#98533f

#85983f

Tetradic

#3f5898

#7f3f98

#987f3f

#58983f

Square

#3f5898

#983f85

#987f3f

#3f9853

Shades

Color #3f5898 mixed toward black.

#35497f

#2a3b65

#202c4c

#151d33

#0b0f19

Tints

Color #3f5898 mixed toward white.

#516eb7

#748bc5

#97a8d4

#bac5e2

#dce2f1

Tones

Color #3f5898 mixed toward gray.

#465b91

#4e5f89

#556282

#5d657a

#646873

Accessibility

Aa White text on this color

6.86:1

Aa Black text on this color

3.06:1

White text reads better on this background (6.86:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#4b4b8c · ΔE 6.6

Deuteranopia

#4a4889 · ΔE 7.5

Tritanopia

#41817f · ΔE 27.6

Achromatopsia

#5a5a5a · ΔE 21.2

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

Code

CSS

background-color: #3f5898;

Tailwind (arbitrary value)

bg-[#3f5898]

Related colors

Royal Blue #4169e1

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#3f5898 (#3f5898) is rgb(63, 88, 152) in RGB.

No, #3f5898 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 #3f5898, or check how it holds up for accessibility.

Generate a palette → Check contrast