#660099 Color

#660099 is rgb(102, 0, 153) in RGB, hsl(280, 100%, 30%) in HSL, and about cmyk(33%, 100%, 0%, 40%) in CMYK. It has no registered color name of its own — the closest is Metallic Violet (#5B0A91), clearly related but distinguishable side by side at ΔE 5.59. White text is the more readable choice on this background.

#660099

HEX#660099

RGBrgb(102, 0, 153)

HSLhsl(280, 100%, 30%)

HSVhsv(280, 100%, 60%)

CMYKcmyk(33%, 100%, 0%, 40%)

OKLCHoklch(40% 0.204 307.9)

LABlab(26.41% 54.82 -57.40)

LCHlch(26.41% 79.37 313.69)

What #660099 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 #660099, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Metallic Violet#5B0A91ΔE 5.59 Indigo#4B0082ΔE 10.74 Violet (RYB)#8601AFΔE 11.11 Grape#6F2DA8ΔE 11.37 Mauveine#8D029BΔE 15.14 Websafe Indigo#330099ΔE 16.39

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

#660099 Channel Values

How #660099 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 102 · G 0 · B 153	8-bit channels as sent to the display
HSL	H 280° · S 100% · L 30%	Easiest model for building lighter and darker variants
HSV	H 280° · S 100% · V 60%	Matches the picker in most design tools
CMYK	C 33% · M 100% · Y 0% · K 40%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	10.37:1 vs white · 2.02:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #660099 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 text10.37:1AA normal AA large AAA normal

Fails AABlack text2.02:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #660099 in the contrast checker.

Colors That Go With #660099

Pairings derived from color-wheel relationships. The complementary color sits opposite #660099; 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 #660099

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 #660099.

How #660099 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#660099

Protanopia#2A2A99

Protanomaly#491F99

Deuteranopia#3B3B98

Deuteranomaly#502D99

Tritanopia#563838

Tritanomaly#5D2B6D

Achromatopsia#404040

Test a full palette in the color blindness simulator.

Using #660099 in Code

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

CSS custom property--color-660099: #660099;

CSS backgroundbackground-color: #660099;

Tailwind configcolors: { 'color-660099': '#660099' }

SwiftUIColor(red: 0.400, green: 0.000, blue: 0.600)

Android XML<color name="color_660099">#660099</color>

SVG fillfill="#660099"

More Purple Colors

#660099 sits in the purple family. These are its neighbours across that family's full range, each with its own breakdown.

6600cc 6231c4 6600ff 602f6b 6618af 5f4b8b 663399 5d1c6d 6633cc 5d0ec0 6633ff 5c1e7b 6f2da8 8601af 9810fa a020f0 af95e4 bfa9ea ce8aff e0b0ff fae8ff 290d31 3c0366 4d179a

#660099 Frequently Asked Questions

What color is #660099?

#660099 is a dark purple — rgb(102, 0, 153) in RGB and hsl(280, 100%, 30%) in HSL. It carries no registered color name of its own; the closest named color is Metallic Violet (#5B0A91), which is clearly related but distinguishable side by side at a CIE76 distance of 5.59.

What is the RGB value of #660099?

#660099 is rgb(102, 0, 153) — red 102, green 0, and blue 153 on the 0-255 scale.

What is the CMYK value of #660099?

#660099 converts to approximately cmyk(33%, 100%, 0%, 40%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #660099 be black or white?

White text is the more readable choice. #660099 scores 10.37:1 against white and 2.02:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #660099 as a CSS color keyword?

No. #660099 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 indigo (#4B0082) at a CIE76 distance of 10.74, which is visibly different.

Open #660099 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.