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#A66DDF Color

#A66DDF is rgb(166, 109, 223) in RGB, hsl(270, 64%, 65%) in HSL, and about cmyk(26%, 51%, 0%, 13%) in CMYK. It has no registered color name of its own — the closest is Amethyst (#9966CC), clearly related but distinguishable side by side at ΔE 6.97. Black text is the more readable choice on this background.

#A66DDF
HEX#A66DDF
RGBrgb(166, 109, 223)
HSLhsl(270, 64%, 65%)
HSVhsv(270, 51%, 87%)
CMYKcmyk(26%, 51%, 0%, 13%)
OKLCHoklch(64.3% 0.171 305.2)
LABlab(56.01% 39.62 -50.25)
LCHlch(56.01% 63.99 308.26)

What #A66DDF 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 #A66DDF, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Amethyst#9966CCΔE 6.97Rich Lavender#A76BCFΔE 7.63Medium Purple#9370DBΔE 8.08Rich Lilac#B666D2ΔE 9.56Lavender (Floral)#B57EDCΔE 12.37Purple Plum#9C51B6ΔE 13.56

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

#A66DDF Channel Values

How #A66DDF breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

ModelChannelsNotes
RGBR 166 · G 109 · B 2238-bit channels as sent to the display
HSLH 270° · S 64% · L 65%Easiest model for building lighter and darker variants
HSVH 270° · S 51% · V 87%Matches the picker in most design tools
CMYKC 26% · M 51% · Y 0% · K 13%Approximate ink mix; confirm with an ICC profile before printing
Luminance3.57:1 vs white · 5.87:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #A66DDF 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.

Fails AAWhite text3.57:1AA normal AA large AAA normal
TextBlack text5.87:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #A66DDF in the contrast checker.

Colors That Go With #A66DDF

Pairings derived from color-wheel relationships. The complementary color sits opposite #A66DDF; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#A66DDF
Complementary
#A6DF6D
Analogous
#6D6DDF
Analogous
#DF6DDF
Triadic
#DFA66D
Triadic
#6DDFA6
Split comp.
#DFDF6D
Split comp.
#6DDF6D

Tints & Shades of #A66DDF

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

#B282E3
#BD92E7
#C9A7EC
#D6BCF0
#E3D1F5
#EDE2F9

Shades

#8F47D7
#7A2CC9
#6324A3
#4C1C7D
#361358
#210C36

Want a full 50-950 ramp with semantic roles? Generate design tokens from #A66DDF.

How #A66DDF 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#A66DDF
Protanopia#7979DF
Protanomaly#8D75DF
Deuteranopia#8383DE
Deuteranomaly#927BDE
Tritanopia#968383
Tritanomaly#9D7BAF
Achromatopsia#878787

Test a full palette in the color blindness simulator.

Using #A66DDF in Code

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

CSS custom property--color-a66ddf: #A66DDF;
CSS backgroundbackground-color: #A66DDF;
Tailwind configcolors: { 'color-a66ddf': '#A66DDF' }
SwiftUIColor(red: 0.651, green: 0.427, blue: 0.875)
Android XML<color name="color_a66ddf">#A66DDF</color>
SVG fillfill="#A66DDF"

More Purple Colors

#A66DDF sits in the purple family. These are its neighbours across that family's full range, each with its own breakdown.

150024fdf8ff170b22fdf4ff1b0d35faf5ff1d0731fae8ff1e0033f6cfff20002ef3e8ff3000524020605414906600cc7008e78806ce9900cca11fffb19cd9c27affcebeefe0b2eb

#A66DDF Frequently Asked Questions

What color is #A66DDF?

#A66DDF is a light purple — rgb(166, 109, 223) in RGB and hsl(270, 64%, 65%) in HSL. It carries no registered color name of its own; the closest named color is Amethyst (#9966CC), which is clearly related but distinguishable side by side at a CIE76 distance of 6.97.

What is the RGB value of #A66DDF?

#A66DDF is rgb(166, 109, 223) — red 166, green 109, and blue 223 on the 0-255 scale.

What is the CMYK value of #A66DDF?

#A66DDF converts to approximately cmyk(26%, 51%, 0%, 13%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #A66DDF be black or white?

Black text is the more readable choice. #A66DDF scores 3.57:1 against white and 5.87:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #A66DDF as a CSS color keyword?

No. #A66DDF 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 mediumpurple (#9370DB) at a CIE76 distance of 8.08, which is clearly related but distinguishable side by side.

Open #A66DDF in a Tool

Hex to RGBHex to HSLHex to CMYKHex to OKLCHHex to PantoneBuild a paletteMake a gradient

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