#3f40cd

Color #3f40cd

A moderately saturated medium blue.

Closest named color Medium Slate Blue #7b68ee · ΔE 17.86 Nearest Tailwind class blue-700 #1447e6 · ΔE 4.2

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

Conversions

HEX

#3f40cd

RGB

rgb(63, 64, 205)

HSL

hsl(239.6, 58.7%, 52.5%)

HSV / HSB

hsv(239.6, 69.3%, 80.4%)

CMYK

cmyk(69.3%, 68.8%, 0%, 19.6%)

LAB

lab(36.23, 44.45, -72.74)

LCH

lch(36.23, 85.25, 301.43)

OKLCH

oklch(46.9%, 0.2108, 274.33)

HWB

hwb(239.6, 24.7%, 19.6%)

Harmony colors

Complementary

#cdcc3f

Analogous

#3f87cd

#3f40cd

#853fcd

Triadic

#3f40cd

#cd3f40

#40cd3f

Split-complementary

#3f40cd

#cd853f

#87cd3f

Tetradic

#3f40cd

#cc3fcd

#cdcc3f

#40cd3f

Square

#3f40cd

#cd3f87

#cdcc3f

#3fcd85

Shades

Color #3f40cd mixed toward black.

#2e2fb1

#25268e

#1c1c6a

#121347

#090923

Tints

Color #3f40cd mixed toward white.

#5f60d5

#7f7fde

#9f9fe6

#bfbfee

#dfdff7

Tones

Color #3f40cd mixed toward gray.

#4b4bc1

#5657b5

#6263a9

#6e6e9e

#7a7a92

Accessibility

Aa White text on this color

7.43:1

Aa Black text on this color

2.83:1

White text reads better on this background (7.43:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#3f3fb7 · ΔE 3

Deuteranopia

#3f3fb2 · ΔE 3.7

Tritanopia

#3fa39f · ΔE 43.5

Achromatopsia

#555555 · ΔE 29.2

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

Code

CSS

background-color: #3f40cd;

Tailwind (arbitrary value)

bg-[#3f40cd]

Related colors

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Medium Blue #0000cd

Frequently asked questions

#3f40cd (#3f40cd) is rgb(63, 64, 205) in RGB.

No, #3f40cd 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 #3f40cd, or check how it holds up for accessibility.

Generate a palette → Check contrast