What is the hex code for #663399?

The hex code for #663399 is #663399. In RGB that is rgb(102, 51, 153).

What is the CMYK value of #663399?

#663399 converts to CMYK cmyk(33.3%, 66.7%, 0%, 40%) for print, and OKLCH oklch(0.4403 0.1603 303.37) for modern color workflows.

What is the closest Pantone color to #663399?

The closest Pantone-style match to #663399 is PANTONE 18-3838 (Ultra Violet). This is an approximation labeled "closest match", not an official Pantone value.

#663399 — #663399

#663399 hex code is #663399. Below are all common color formats, the nearest CSS named color, and the closest Pantone-style match.

#663399rgb(102, 51, 153)

#663399 is a hex color. Here are its RGB, HSL, HSV, CMYK and OKLCH values, the nearest CSS named color, and the closest Pantone-style match.

#663399 in every format

HEX	#663399
RGB	rgb(102, 51, 153)
HSL	hsl(270, 50%, 40%)
HSV	hsv(270, 66.7%, 60%)
CMYK	cmyk(33.3%, 66.7%, 0%, 40%)
OKLCH	oklch(0.4403 0.1603 303.37)

#663399 to Pantone & nearest name

Nearest CSS named color	rebeccapurple
Closest Pantone-style match	PANTONE 18-3838 · Ultra Violet
Readable text color on this background	#FFFFFF

Pantone result is the nearest entry in our approximation set and is labeled "closest match" — it is not an official Pantone color value.

Convert another color

#663399nearest CSS color: rebeccapurple

HEX#663399

RGBrgb(102, 51, 153)

HSLhsl(270, 50%, 40%)

HSVhsv(270, 66.7%, 60%)

CMYKcmyk(33.3%, 66.7%, 0%, 40%)

OKLCHoklch(0.4403 0.1603 303.37)

Nearest CSS named color

rebeccapurple

Closest Pantone-style match

PANTONE 18-3838 · Ultra Violet

Pantone match is an approximation labeled "closest match" — not an official Pantone value.

Get this color as JSON (developer API)

curl "https://color.wrapper-agency.com/api/v1/color?value=%23663399"

Free color-conversion API — no key during beta. Returns all formats plus nearest named and closest Pantone-style match.

Related colors

Spotify Green

#1DB954

International Klein Blue

FAQ

What is the #663399 hex code?: #663399 is #663399.
What is #663399 in RGB and CMYK?: #663399 is rgb(102, 51, 153) in RGB and cmyk(33.3%, 66.7%, 0%, 40%) in CMYK.
Is this an official Pantone value?: No. HueKit shows the closest match from an approximation set for guidance only. For production print, confirm against an official Pantone guide.