#6633CC Color

#6633CC is rgb(102, 51, 204) in RGB, hsl(260, 60%, 50%) in HSL, and about cmyk(50%, 75%, 0%, 20%) in CMYK. It has no registered color name of its own — the closest is Iridescent Indigo (#3C32CD), visibly different at ΔE 10.51. White text is the more readable choice on this background.

#6633CC

HEX#6633CC

RGBrgb(102, 51, 204)

HSLhsl(260, 60%, 50%)

HSVhsv(260, 75%, 80%)

CMYKcmyk(50%, 75%, 0%, 20%)

OKLCHoklch(48.2% 0.218 291.1)

LABlab(35.96% 49.09 -72.13)

LCHlch(35.96% 87.25 304.24)

What #6633CC 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 #6633CC, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Iridescent Indigo#3C32CDΔE 10.51 Majorelle Blue#6050DCΔE 13.92 Violet (Caran D'ache)#6E00C0ΔE 14.04 Lavender Indigo#9457EBΔE 15.14 Blue Violet#8A2BE2ΔE 15.36 Palatinate Blue#273BE2ΔE 17.02

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

#6633CC Channel Values

How #6633CC 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 51 · B 204	8-bit channels as sent to the display
HSL	H 260° · S 60% · L 50%	Easiest model for building lighter and darker variants
HSV	H 260° · S 75% · V 80%	Matches the picker in most design tools
CMYK	C 50% · M 75% · Y 0% · K 20%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	7.22:1 vs white · 2.91:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #6633CC 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 text7.22:1AA normal AA large AAA normal

Fails AABlack text2.91:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #6633CC in the contrast checker.

Colors That Go With #6633CC

Pairings derived from color-wheel relationships. The complementary color sits opposite #6633CC; 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 #6633CC

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 #6633CC.

How #6633CC 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#6633CC

Protanopia#3F3FCC

Protanomaly#513BCC

Deuteranopia#4949CC

Deuteranomaly#5641CC

Tritanopia#455B5B

Tritanomaly#544E96

Achromatopsia#575757

Test a full palette in the color blindness simulator.

Using #6633CC in Code

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

CSS custom property--color-6633cc: #6633CC;

CSS backgroundbackground-color: #6633CC;

Tailwind configcolors: { 'color-6633cc': '#6633CC' }

SwiftUIColor(red: 0.400, green: 0.200, blue: 0.800)

Android XML<color name="color_6633cc">#6633CC</color>

SVG fillfill="#6633CC"

More Purple Colors

#6633CC sits in the purple family. These are its neighbours across that family's full range, each with its own breakdown.

6633ff 663399 6800b3 6618af 69359c 6600ff 6b0099 6600cc 6c3082 660099 6e00c0 6231c4 7851a9 8e51ff 9933ff a684ff b66bdb c9a0dc d6cadd e9d4ff 150024 301849 410070 563c5c

#6633CC Frequently Asked Questions

What color is #6633CC?

#6633CC is a mid-tone purple — rgb(102, 51, 204) in RGB and hsl(260, 60%, 50%) in HSL. It carries no registered color name of its own; the closest named color is Iridescent Indigo (#3C32CD), which is visibly different at a CIE76 distance of 10.51.

What is the RGB value of #6633CC?

#6633CC is rgb(102, 51, 204) — red 102, green 51, and blue 204 on the 0-255 scale.

What is the CMYK value of #6633CC?

#6633CC converts to approximately cmyk(50%, 75%, 0%, 20%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #6633CC be black or white?

White text is the more readable choice. #6633CC scores 7.22:1 against white and 2.91:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #6633CC as a CSS color keyword?

No. #6633CC 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 blueviolet (#8A2BE2) at a CIE76 distance of 15.36, which is visibly different.

Open #6633CC 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.