Press Release

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COLOR KINETICS CO-FOUNDER NAMED ONE OF 50 POWERFUL PEOPLE IN ENTERTAINMENT TECHNOLOGY Ihor Lys, CTO, recognized for industry impact of solid-state lighting patents Boston, MA - June 30, 2004 - Color Kinetics Incorporated (Nasdaq: CLRK), a pioneer in the design, marketing and licensing of intelligent solid-state lighting systems, today announced that Ihor Lys, PhD, Co-founder and Chief Technology Officer, was named to Entertainment Design magazine's 50 Powerful People in Entertainment Technology. Published in the July 2004 issue, the 50 Powerful People list was determined by an industry poll and the magazine's editorial staff, and is comprised of highly influential designers, inventors, manufacturers, technicians and other industry professionals. Dr. Lys is the author of 22 issued patents and numerous patent filings pertaining to many aspects of solid-state lighting technology. He was previously named to Technology Review magazine's TR100 list of top young innovators under 35, which recognizes individuals whose work in business and technology is transforming traditional industries. About Color Kinetics Color Kinetics Incorporated (NASDAQ: CLRK) is a pioneer in the design, marketing and licensing of intelligent solid-state lighting systems and technologies. The company's award-winning product lines apply the practical and aesthetic benefits of LEDs to transcend the limits of traditional light sources for use in high-performance lighting and OEM and licensing applications. Its products and technologies leverage a patented layer of digital intelligence, called ChromacoreŽ, to generate and control millions of colors and dynamic lighting effects. Color Kinetics holds 29 patents and has over 115 patent applications pending that apply to many aspects of solid-state lighting technology. Founded in 1997, the company is headquartered in Boston, MA with offices in the UK, China, and a joint venture in Japan. More information can be found at www.colorkinetics.com. For media seeking further information, please contact: Felicia Spagnoli Professional Luminaires North America Philips Lighting 781-418-9292 felicia.spagnoli@philips.com "Safe Harbor Statement" under the Private Securities Litigation Reform Act of 1995: Statements in this press release regarding Color Kinetics Incorporated's business that are not historical facts are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Readers are cautioned that these statements involve risks and uncertainties, are only predictions and may differ materially from actual future events and results. For a discussion of such risks and uncertainties, see "Risk Factors" in the Company's Registration Statement on Form S-1, File Number 333-114386, filed with the Securities and Exchange Commission.