#A663FD Color

#A663FD is rgb(166, 99, 253) in RGB, hsl(266, 97%, 69%) in HSL, and about cmyk(34%, 61%, 0%, 1%) 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 5.9. Black text is the more readable choice on this background.

#A663FD

HEX#A663FD

RGBrgb(166, 99, 253)

HSLhsl(266, 97%, 69%)

HSVhsv(266, 61%, 99%)

CMYKcmyk(34%, 61%, 0%, 1%)

OKLCHoklch(64.7% 0.22 300.4)

LABlab(55.47% 50.27 -67.80)

LCHlch(55.47% 84.41 306.56)

What #A663FD 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 #A663FD, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Lavender Indigo#9457EBΔE 5.9 Medium Slate Blue#7B68EEΔE 17.01 Dark Orchid#9932CCΔE 17.47 Majorelle Blue#6050DCΔE 19.15 Very Light Blue#6666FFΔE 19.34 Heliotrope#DF73FFΔE 20.11

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

#A663FD Channel Values

How #A663FD 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 99 · B 253	8-bit channels as sent to the display
HSL	H 266° · S 97% · L 69%	Easiest model for building lighter and darker variants
HSV	H 266° · S 61% · V 99%	Matches the picker in most design tools
CMYK	C 34% · M 61% · Y 0% · K 1%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	3.61:1 vs white · 5.82:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #A663FD 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 text3.61:1AA normal AA large AAA normal

TextBlack text5.82:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #A663FD in the contrast checker.

Colors That Go With #A663FD

Pairings derived from color-wheel relationships. The complementary color sits opposite #A663FD; 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 #A663FD

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 #A663FD.

How #A663FD 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#A663FD

Protanopia#7272FD

Protanomaly#8A6CFD

Deuteranopia#7E7EFC

Deuteranomaly#9074FD

Tritanopia#8E8585

Tritanomaly#9879C1

Achromatopsia#878787

Test a full palette in the color blindness simulator.

Using #A663FD in Code

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

CSS custom property--color-a663fd: #A663FD;

CSS backgroundbackground-color: #A663FD;

Tailwind configcolors: { 'color-a663fd': '#A663FD' }

SwiftUIColor(red: 0.651, green: 0.388, blue: 0.992)

Android XML<color name="color_a663fd">#A663FD</color>

SVG fillfill="#A663FD"

More Purple Colors

#A663FD 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

#A663FD Frequently Asked Questions

What color is #A663FD?

#A663FD is a light purple — rgb(166, 99, 253) in RGB and hsl(266, 97%, 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 5.9.

What is the RGB value of #A663FD?

#A663FD is rgb(166, 99, 253) — red 166, green 99, and blue 253 on the 0-255 scale.

What is the CMYK value of #A663FD?

#A663FD converts to approximately cmyk(34%, 61%, 0%, 1%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #A663FD be black or white?

Black text is the more readable choice. #A663FD scores 3.61:1 against white and 5.82:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #A663FD as a CSS color keyword?

No. #A663FD 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 17.01, which is visibly different.

Open #A663FD 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.