#3851b3

Color #3851b3

A moderately saturated medium blue.

Closest named color Royal Blue #4169e1 · ΔE 14.58 Nearest Tailwind class blue-800 #193cb8 · ΔE 6.5

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

Conversions

HEX

#3851b3

RGB

rgb(56, 81, 179)

HSL

hsl(227.8, 52.3%, 46.1%)

HSV / HSB

hsv(227.8, 68.7%, 70.2%)

CMYK

cmyk(68.7%, 54.7%, 0%, 29.8%)

LAB

lab(37.8, 23.75, -54.98)

LCH

lch(37.8, 59.89, 293.36)

OKLCH

oklch(47.3%, 0.1581, 268.8)

HWB

hwb(227.8, 22%, 29.8%)

Harmony colors

Complementary

#b39a38

Analogous

#388fb3

#3851b3

#5d38b3

Triadic

#3851b3

#b33851

#51b338

Split-complementary

#3851b3

#b35d38

#8fb338

Tetradic

#3851b3

#9a38b3

#b39a38

#51b338

Square

#3851b3

#b3388f

#b39a38

#38b35d

Shades

Color #3851b3 mixed toward black.

#2f4495

#253677

#1c295a

#131b3c

#090e1e

Tints

Color #3851b3 mixed toward white.

#5169c8

#7387d3

#96a5de

#b9c3e9

#dce1f4

Tones

Color #3851b3 mixed toward gray.

#4257a9

#4d5d9f

#576394

#61698a

#6b6f80

Accessibility

Aa White text on this color

7.01:1

Aa Black text on this color

3:1

White text reads better on this background (7.01:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#4444a2 · ΔE 5.5

Deuteranopia

#43419e · ΔE 6.5

Tritanopia

#3a938f · ΔE 36

Achromatopsia

#595959 · ΔE 25.6

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

Code

CSS

background-color: #3851b3;

Tailwind (arbitrary value)

bg-[#3851b3]

Related colors

Royal Blue #4169e1

Cornflower Blue #6495ed

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Frequently asked questions

#3851b3 (#3851b3) is rgb(56, 81, 179) in RGB.

No, #3851b3 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 #3851b3, or check how it holds up for accessibility.

Generate a palette → Check contrast