#397ff5

Color #397ff5

A vivid, highly saturated medium blue.

Closest named color Royal Blue #4169e1 · ΔE 10.13 Nearest Tailwind class blue-500 #2b7fff · ΔE 1

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Conversions

HEX

#397ff5

RGB

rgb(57, 127, 245)

HSL

hsl(217.7, 90.4%, 59.2%)

HSV / HSB

hsv(217.7, 76.7%, 96.1%)

CMYK

cmyk(76.7%, 48.2%, 0%, 3.9%)

LAB

lab(54.7, 18.81, -65.37)

LCH

lch(54.7, 68.02, 286.05)

OKLCH

oklch(61.6%, 0.1907, 260.22)

HWB

hwb(217.7, 22.4%, 3.9%)

Harmony colors

Complementary

#f5af39

Analogous

#39ddf5

#397ff5

#5139f5

Triadic

#397ff5

#f5397f

#7ff539

Split-complementary

#397ff5

#f55139

#ddf539

Tetradic

#397ff5

#af39f5

#f5af39

#7ff539

Square

#397ff5

#f539dd

#f5af39

#39f551

Shades

Color #397ff5 mixed toward black.

#0c61f0

#0a4dc0

#073a90

#052760

#021330

Tints

Color #397ff5 mixed toward white.

#5a94f7

#7baaf8

#9cbffa

#bdd4fc

#deeafd

Tones

Color #397ff5 mixed toward gray.

#4983e5

#5887d6

#688bc6

#788fb6

#8793a7

Accessibility

Aa White text on this color

3.8:1

Aa Black text on this color

5.53:1

Black text reads better on this background (5.53:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#5f60e0 · ΔE 12.9

Deuteranopia

#5b56da · ΔE 15.8

Tritanopia

#3fcdc8 · ΔE 37.4

Achromatopsia

#838383 · ΔE 26.9

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

Code

CSS

background-color: #397ff5;

Tailwind (arbitrary value)

bg-[#397ff5]

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

#397ff5 (#397ff5) is rgb(57, 127, 245) in RGB.

No, #397ff5 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.

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 #397ff5, or check how it holds up for accessibility.

Generate a palette → Check contrast