#3f31a3

Color #3f31a3

A moderately saturated medium blue.

Closest named color Rebecca Purple #663399 · ΔE 13.34 Nearest Tailwind class indigo-800 #372aac · ΔE 2.2

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Conversions

HEX

#3f31a3

RGB

rgb(63, 49, 163)

HSL

hsl(247.4, 53.8%, 41.6%)

HSV / HSB

hsv(247.4, 69.9%, 63.9%)

CMYK

cmyk(61.3%, 69.9%, 0%, 36.1%)

LAB

lab(29.15, 39.5, -59.5)

LCH

lch(29.15, 71.42, 303.58)

OKLCH

oklch(40.6%, 0.1746, 280.83)

HWB

hwb(247.4, 19.2%, 36.1%)

Harmony colors

Complementary

#95a331

Analogous

#315ca3

#3f31a3

#7831a3

Triadic

#3f31a3

#a33f31

#31a33f

Split-complementary

#3f31a3

#a37831

#5ca331

Tetradic

#3f31a3

#a33195

#95a331

#31a33f

Square

#3f31a3

#a3315c

#95a331

#31a378

Shades

Color #3f31a3 mixed toward black.

#352988

#2a216d

#201952

#151036

#0b081b

Tints

Color #3f31a3 mixed toward white.

#5140c6

#7366d1

#968cdd

#b9b3e8

#dcd9f4

Tones

Color #3f31a3 mixed toward gray.

#463b9a

#4d4490

#554e87

#5c577d

#636174

Accessibility

Aa White text on this color

9.64:1

Aa Black text on this color

2.18:1

White text reads better on this background (9.64:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#393991 · ΔE 4.2

Deuteranopia

#3a3b8d · ΔE 5.2

Tritanopia

#3e817e · ΔE 36.6

Achromatopsia

#454545 · ΔE 27.5

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

Code

CSS

background-color: #3f31a3;

Tailwind (arbitrary value)

bg-[#3f31a3]

Related colors

Slate Blue #6a5acd

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Frequently asked questions

#3f31a3 (#3f31a3) is rgb(63, 49, 163) in RGB.

No, #3f31a3 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 #3f31a3, or check how it holds up for accessibility.

Generate a palette → Check contrast