#A666FA Color

#A666FA is rgb(166, 102, 250) in RGB, hsl(266, 94%, 69%) in HSL, and about cmyk(34%, 59%, 0%, 2%) in CMYK. It has no registered color name of its own — the closest is Lavender Indigo (#9457EB), clearly related but distinguishable side by side at ΔE 5.96. Black text is the more readable choice on this background.

#A666FA

HEX#A666FA

RGBrgb(166, 102, 250)

HSLhsl(266, 94%, 69%)

HSVhsv(266, 59%, 98%)

CMYKcmyk(34%, 59%, 0%, 2%)

OKLCHoklch(64.9% 0.213 300.5)

LABlab(55.89% 48.22 -65.46)

LCHlch(55.89% 81.30 306.37)

What #A666FA 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 #A666FA, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Lavender Indigo#9457EBΔE 5.96 Medium Slate Blue#7B68EEΔE 15.13 Dark Orchid#9932CCΔE 18.22 Majorelle Blue#6050DCΔE 18.64 Heliotrope#DF73FFΔE 19.13 Very Light Blue#6666FFΔE 19.27

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

#A666FA Channel Values

How #A666FA 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 166 · G 102 · B 250	8-bit channels as sent to the display
HSL	H 266° · S 94% · L 69%	Easiest model for building lighter and darker variants
HSV	H 266° · S 59% · V 98%	Matches the picker in most design tools
CMYK	C 34% · M 59% · Y 0% · K 2%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	3.56:1 vs white · 5.9:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #A666FA 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 text3.56:1AA normal AA large AAA normal

TextBlack text5.9:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #A666FA in the contrast checker.

Colors That Go With #A666FA

Pairings derived from color-wheel relationships. The complementary color sits opposite #A666FA; 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 #A666FA

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 #A666FA.

How #A666FA 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#A666FA

Protanopia#7474FA

Protanomaly#8B6FFA

Deuteranopia#8080F9

Deuteranomaly#9176FA

Tritanopia#8F8686

Tritanomaly#997AC0

Achromatopsia#888888

Test a full palette in the color blindness simulator.

Using #A666FA in Code

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

CSS custom property--color-a666fa: #A666FA;

CSS backgroundbackground-color: #A666FA;

Tailwind configcolors: { 'color-a666fa': '#A666FA' }

SwiftUIColor(red: 0.651, green: 0.400, blue: 0.980)

Android XML<color name="color_a666fa">#A666FA</color>

SVG fillfill="#A666FA"

More Purple Colors

#A666FA 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

#A666FA Frequently Asked Questions

What color is #A666FA?

#A666FA is a light purple — rgb(166, 102, 250) in RGB and hsl(266, 94%, 69%) in HSL. It carries no registered color name of its own; the closest named color is Lavender Indigo (#9457EB), which is clearly related but distinguishable side by side at a CIE76 distance of 5.96.

What is the RGB value of #A666FA?

#A666FA is rgb(166, 102, 250) — red 166, green 102, and blue 250 on the 0-255 scale.

What is the CMYK value of #A666FA?

#A666FA converts to approximately cmyk(34%, 59%, 0%, 2%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #A666FA be black or white?

Black text is the more readable choice. #A666FA scores 3.56:1 against white and 5.9:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #A666FA as a CSS color keyword?

No. #A666FA 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 mediumslateblue (#7B68EE) at a CIE76 distance of 15.13, which is visibly different.

Open #A666FA in a Tool

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