#640CDF Color

#640CDF is rgb(100, 12, 223) in RGB, hsl(265, 90%, 46%) in HSL, and about cmyk(55%, 95%, 0%, 13%) in CMYK. It has no registered color name of its own — the closest is Han Purple (#5218FA), visibly different at ΔE 12.91. White text is the more readable choice on this background.

#640CDF

HEX#640CDF

RGBrgb(100, 12, 223)

HSLhsl(265, 90%, 46%)

HSVhsv(265, 95%, 87%)

CMYKcmyk(55%, 95%, 0%, 13%)

OKLCHoklch(47.1% 0.262 289.5)

LABlab(33.08% 64.68 -87.85)

LCHlch(33.08% 109.09 306.36)

What #640CDF Is Called

Most hex codes have no name: there are 16.7 million of them and a few thousand registered names. These are the named colors nearest to #640CDF, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Han Purple#5218FAΔE 12.91 Poison Purple#7F01FEΔE 13.56 Near Violet#8000FFΔE 14.04 Medium Blue#0000CDΔE 14.34 Blue Violet#8A2BE2ΔE 14.5 Electric Indigo#6F00FFΔE 14.67

Browse the full index of named colors A-Z or every purple in the library.

#640CDF Channel Values

How #640CDF breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

Model	Channels	Notes
RGB	R 100 · G 12 · B 223	8-bit channels as sent to the display
HSL	H 265° · S 90% · L 46%	Easiest model for building lighter and darker variants
HSV	H 265° · S 95% · V 87%	Matches the picker in most design tools
CMYK	C 55% · M 95% · Y 0% · K 13%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	7.89:1 vs white · 2.66:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #640CDF background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1. Contrast is one check, not a full accessibility review.

TextWhite text7.89:1AA normal AA large AAA normal

Fails AABlack text2.66:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #640CDF in the contrast checker.

Colors That Go With #640CDF

Pairings derived from color-wheel relationships. The complementary color sits opposite #640CDF; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base

Complementary

Analogous

Analogous

Triadic

Triadic

Split comp.

Split comp.

Tints & Shades of #640CDF

Lighter tints and darker shades built by moving the lightness channel while holding hue and saturation, which is what you want for hover states, backgrounds, and text variants.

Tints

Shades

Want a full 50-950 ramp with semantic roles? Generate design tokens from #640CDF.

How #640CDF Looks with Color Vision Deficiency

Simulated with the Viénot, Brettel & Mollon LMS projection model. Anomalous types are rendered as partial versions of the matching dichromacy, which is an approximation rather than a per-person clinical model.

Typical#640CDF

Protanopia#2C2CDF

Protanomaly#4922DF

Deuteranopia#3C3CDF

Deuteranomaly#4F2FDF

Tritanopia#345757

Tritanomaly#4C45A0

Achromatopsia#515151

Test a full palette in the color blindness simulator.

Using #640CDF in Code

Copy-ready declarations for the places this color usually ends up.

CSS custom property--color-640cdf: #640CDF;

CSS backgroundbackground-color: #640CDF;

Tailwind configcolors: { 'color-640cdf': '#640CDF' }

SwiftUIColor(red: 0.392, green: 0.047, blue: 0.875)

Android XML<color name="color_640cdf">#640CDF</color>

SVG fillfill="#640CDF"

More Purple Colors

#640CDF sits in the purple family. These are its neighbours across that family's full range, each with its own breakdown.

150024 fdf8ff 170b22 fdf4ff 1b0d35 faf5ff 1d0731 fae8ff 1e0033 f6cfff 20002e f3e8ff 300052 402060 541490 6600cc 7008e7 8806ce 9900cc a11fff b19cd9 c27aff cebeef e0b2eb

#640CDF Frequently Asked Questions

What color is #640CDF?

#640CDF is a mid-tone purple — rgb(100, 12, 223) in RGB and hsl(265, 90%, 46%) in HSL. It carries no registered color name of its own; the closest named color is Han Purple (#5218FA), which is visibly different at a CIE76 distance of 12.91.

What is the RGB value of #640CDF?

#640CDF is rgb(100, 12, 223) — red 100, green 12, and blue 223 on the 0-255 scale.

What is the CMYK value of #640CDF?

#640CDF converts to approximately cmyk(55%, 95%, 0%, 13%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #640CDF be black or white?

White text is the more readable choice. #640CDF scores 7.89:1 against white and 2.66:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #640CDF as a CSS color keyword?

No. #640CDF is not one of the CSS color keywords, so it has to be written as a hex, rgb() or hsl() value. The closest keyword is mediumblue (#0000CD) at a CIE76 distance of 14.34, which is visibly different.

Open #640CDF in a Tool

Hex to RGB Hex to HSL Hex to CMYK Hex to OKLCH Hex to Pantone Build a palette Make a gradient

Keep exploring: every purple in the color library, the guide to shades of purple, or the full color library.