'sharp colours' is a correct and usable phrase in written English.
You can use it when you want to describe something that has vivid, strong, and/or bright colors. For example, "The abstract painting had sharp colours of green, yellow, and blue."
With their sharp colours and bleeding forms, Howard's paintings certainly cut to the quick.
The latest effort, by a Canadian firm called Opalux, uses objects called photonic crystals to produce electronic paper with bright, sharp colours.
Gone are the sharp colours that characterised his C-type prints, replaced by a grainy, lo-fi monochrome that hints at the desperation at the heart of hardcore rave culture and, perhaps more pertinently, at McConnell's darkening creative imagination.
A few of the lanthanide ions with unpaired 4f electrons have electronic transitions that give intense and sharp colours when activated by electrons or photons and are used in televisions that use cathode-ray tubes, optical displays, and fluorescent lighting; these are Eu3+ (red), Eu2+ (blue), Tb3+ (green), and Tm3+ (blue).
In contrast with previous traditions, ukiyo-e painters favoured bright, sharp colours, and often delineated contours with sumi ink, an effect similar to the linework in prints.
Theorem begins in silence, before the opening monochrome turns into sharp colour.
Cones are far less numerous, but give a sharp, colour view of the world in good lighting conditions.
"Some part of your world the town you live in, the company you work for, your school system, the city hospital will hang there in a sharp colour image, abstract but recognisable, moving subtly in a thousand places".Even two decades later that sounds like science fiction.
It's definitely more attractive, and impresses with a sharp colour display.
The end point was indicated by a sharp colour change from red to blue.
Little lagoons, glassy blobs of brilliant blue water, punctuate the ride, pockets of sharp colour in barren nothingness.
