#3f55bb

Color #3f55bb

A moderately saturated medium blue.

Closest named color Royal Blue #4169e1 · ΔE 11.99 Nearest Tailwind class blue-700 #1447e6 · ΔE 6.6

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

Conversions

HEX

#3f55bb

RGB

rgb(63, 85, 187)

HSL

hsl(229.4, 49.6%, 49%)

HSV / HSB

hsv(229.4, 66.3%, 73.3%)

CMYK

cmyk(66.3%, 54.5%, 0%, 26.7%)

LAB

lab(39.82, 25.13, -56.41)

LCH

lch(39.82, 61.75, 294.01)

OKLCH

oklch(49.1%, 0.1621, 270.21)

HWB

hwb(229.4, 24.7%, 26.7%)

Harmony colors

Complementary

#bba53f

Analogous

#3f93bb

#3f55bb

#673fbb

Triadic

#3f55bb

#bb3f55

#55bb3f

Split-complementary

#3f55bb

#bb673f

#93bb3f

Tetradic

#3f55bb

#a53fbb

#bba53f

#55bb3f

Square

#3f55bb

#bb3f93

#bba53f

#3fbb67

Shades

Color #3f55bb mixed toward black.

#34479c

#2a397d

#1f2a5d

#151c3e

#0a0e1f

Tints

Color #3f55bb mixed toward white.

#5d70c8

#7d8cd3

#9ea9de

#bec6e9

#dfe2f4

Tones

Color #3f55bb mixed toward gray.

#495cb1

#5462a6

#5e699c

#687092

#737687

Accessibility

Aa White text on this color

6.5:1

Aa Black text on this color

3.23:1

White text reads better on this background (6.5:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#494aa9 · ΔE 4.9

Deuteranopia

#4846a5 · ΔE 6.1

Tritanopia

#409a96 · ΔE 36.9

Achromatopsia

#5e5e5e · ΔE 25.9

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

Code

CSS

background-color: #3f55bb;

Tailwind (arbitrary value)

bg-[#3f55bb]

Related colors

Royal Blue #4169e1

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Frequently asked questions

#3f55bb (#3f55bb) is rgb(63, 85, 187) in RGB.

No, #3f55bb 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.

Try it → Generators

Palette Generator

Generate complementary, analogous, triadic, split-complementary, tetradic, square, and monochromatic palettes from any base color.

Try it →

Build something with this color

Generate a full palette from #3f55bb, or check how it holds up for accessibility.

Generate a palette → Check contrast