Rainbows get their round shape from a process called reflection.
Georgina, age 5, wants to know why rainbows are round.
In India, a light complexion is associated with power, status and beauty, fueling an innovative and growing market of skin-bleaching products.
Indian girls grow up in an environment where they are constantly reminded that fair is beautiful.
Butterfly wings, like those of the monarch butterfly, have inspired scientists to create “structural colours”.
Scientists continue to invent new colours for new applications thanks to nanoscale structures.
Red is the colour of life, of danger and of good luck.
Dusk during the second day of the day-night Sheffield Shield match between Queensland and New South Wales at the Gabba, Brisbane, in October 2016.
AAP Image/Dave Hunt
New research shows pink cricket balls can be extra difficult to see in those crucial minutes when day turns to night during play.
Jupiter and its moon Io really do look like they do in this latest image by NASA’s Juno probe.
Many images of planets have been manipulated. So have we seen their true colours? Not always, it turns out. But Jupiter's red spot really is red.
Indigo, pink, saffron: colour for India isn't just for throwing. It's political, too.
Australian bowler Mitchell Marsh receives the pink ball during the Test match between Australia and New Zealand at the Adelaide Oval.
AAP Image/Dave Hunt
The pink ball introduced to this year's day night cricket test can be difficult to see for some players, especially if they are colour blind. There is a better choice of colour.
Jay Matternes/Wikimedia Commons
Scientists have shown how tiny organic tissue remnants in fossils correspond to the pigments in the animals' original skin and hair.
The Greatest Mind You’ve Never Heard Of.
The 13th century polymath Robert Grosseteste was ahead of his time when it came to understanding light, colour and the universe itself.
Are you feeling warm or cold by the colours?
In a typical kitchen or bathroom you often find the hot and cold water taps labelled red and blue. It’s common practice in industrial and interior design in many parts of the world to present information…
Australian flowers and their pollinators have evolved a specific way of communicating – all based upon colour.
In Australia, honeyeaters are far and away the most abundant and important nectar-feeding birds, so also the most important avian pollinators of flowers. What effect has their visual perception had on…
Colour blindness tests on shrimp have quashed assumptions that more complex eyes mean better colour vision. Scientists found…
Them’s fighting words. And colours.
Humans have been fascinated by the colour-changing abilities of chameleons for a long time. Aristotle himself, the forefather of Western philosophy and also a keen zoologist, mentioned the lizard’s ability…
A soft-toned purple – just in time for Christmas.
Stephen Dobson Photography
US colour swatch giant Pantone has picked a soft, rosy purple by the name of Radiant Orchid as the colour of 2014, displacing their 2013 choice, Emerald Green. According to Pantone marketing-speak the…
New links have been found between the colour patterns in a monkey’s face and its social structure and environment. Research…
Australian native flowers have moved away from insects as pollinators and instead coloured themselves to attract birds. Over…
The plumage of male fairy-wrens is certainly impressive, but why is it so blue?
Why are some animals blue and others red? Explaining the diversity of colours in nature is a central issue in evolutionary biology. And part of the answer may lie in the most obvious place: the eye. In…
Vibrant blue plumage of breeding male fairy-wren may be linked to their higher visual sensitivity to ultraviolet (UV) light…
Iridescent surfaces such as opals, beetle exoskeletons and butterfly wings have unique colour properties due to their microscopic…