#640fa4

Color #640fa4

A vivid, highly saturated dark purple.

Closest named color Indigo #4b0082 · ΔE 13.2 Nearest Tailwind class purple-800 #6e11b0 · ΔE 2.3

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

Conversions

HEX

#640fa4

RGB

rgb(100, 15, 164)

HSL

hsl(274.2, 83.2%, 35.1%)

HSV / HSB

hsv(274.2, 90.9%, 64.3%)

CMYK

cmyk(39%, 90.9%, 0%, 35.7%)

LAB

lab(28.72, 58.93, -60.65)

LCH

lch(28.72, 84.56, 314.18)

OKLCH

oklch(41.3%, 0.2065, 302.92)

HWB

hwb(274.2, 5.9%, 35.7%)

Harmony colors

Complementary

#4fa40f

Analogous

#190fa4

#640fa4

#a40f9a

Triadic

#640fa4

#a4640f

#0fa464

Split-complementary

#640fa4

#9aa40f

#0fa419

Tetradic

#640fa4

#a40f4f

#4fa40f

#0fa464

Square

#640fa4

#a4190f

#4fa40f

#0f9aa4

Shades

Color #640fa4 mixed toward black.

#530d89

#430a6d

#320852

#210537

#11031b

Tints

Color #640fa4 mixed toward white.

#8314d7

#9e35ec

#b667f1

#ce9af6

#e7ccfa

Tones

Color #640fa4 mixed toward gray.

#621b98

#60288b

#5f347f

#5d4172

#5b4d66

Accessibility

Aa White text on this color

9.78:1

Aa Black text on this color

2.15:1

White text reads better on this background (9.78:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#4d4c91 · ΔE 14.9

Deuteranopia

#51558c · ΔE 18

Tritanopia

#627f7b · ΔE 34.8

Achromatopsia

#444444 · ΔE 29.2

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

Code

CSS

background-color: #640fa4;

Tailwind (arbitrary value)

bg-[#640fa4]

Related colors

Indigo #4b0082

Blue Violet #8a2be2

Rebecca Purple #663399

Dark Orchid #9932cc

Dark Violet #9400d3

Medium Orchid #ba55d3

Frequently asked questions

#640fa4 (#640fa4) is rgb(100, 15, 164) in RGB.

No, #640fa4 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.

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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 #640fa4, or check how it holds up for accessibility.

Generate a palette → Check contrast