#3f66ae

Color #3f66ae

A moderately saturated medium blue.

Closest named color Steel Blue #4682b4 · ΔE 19.29 Nearest Tailwind class sky-700 #0069a8 · ΔE 7

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Conversions

HEX

#3f66ae

RGB

rgb(63, 102, 174)

HSL

hsl(218.9, 46.8%, 46.5%)

HSV / HSB

hsv(218.9, 63.8%, 68.2%)

CMYK

cmyk(63.8%, 41.4%, 0%, 31.8%)

LAB

lab(43.67, 9.57, -42.59)

LCH

lch(43.67, 43.65, 282.66)

OKLCH

oklch(51.7%, 0.1226, 261.61)

HWB

hwb(218.9, 24.7%, 31.8%)

Harmony colors

Complementary

#ae873f

Analogous

#3f9eae

#3f66ae

#503fae

Triadic

#3f66ae

#ae3f66

#66ae3f

Split-complementary

#3f66ae

#ae503f

#9eae3f

Tetradic

#3f66ae

#873fae

#ae873f

#66ae3f

Square

#3f66ae

#ae3f9e

#ae873f

#3fae50

Shades

Color #3f66ae mixed toward black.

#355591

#2a4474

#203357

#15223a

#0b111d

Tints

Color #3f66ae mixed toward white.

#587ec3

#7997cf

#9bb1db

#bccbe7

#dee5f3

Tones

Color #3f66ae mixed toward gray.

#4869a5

#526c9c

#5b6e92

#647189

#6d7480

Accessibility

Aa White text on this color

5.64:1

Aa Black text on this color

3.72:1

White text reads better on this background (5.64:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#5353a0 · ΔE 9.4

Deuteranopia

#504d9d · ΔE 10.9

Tritanopia

#429492 · ΔE 29.2

Achromatopsia

#676767 · ΔE 22.2

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

Code

CSS

background-color: #3f66ae;

Tailwind (arbitrary value)

bg-[#3f66ae]

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

#3f66ae (#3f66ae) is rgb(63, 102, 174) in RGB.

No, #3f66ae 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.

Try it → Accessibility

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 #3f66ae, or check how it holds up for accessibility.

Generate a palette → Check contrast