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The color cyan, a greenish-blue, has notable tints and shades. It is one of the subtractive primary colors along with magenta, and yellow. The first recorded use of cyan blue as a color name was in 1879 ("cyan blue" being the name used for "cyan" in the 19th century). [1]
Congenital red–green color blindness; Other names: Daltonism; red–green color vision deficiency: An example Ishihara test that may be used to detect red–green color blindness. Those with normal color vision would be able to see a green "74" on an orange background, while those with red–green color blindness would see the green and red ...
For practical additive color models, an equal superposition of all primaries results in neutral (gray or white). In the RGB model, an equal mixture of red and green is yellow, an equal mixture of green and blue is cyan and an equal mixture of blue and red is magenta. [1]: 4.2 Yellow, cyan and magenta are the secondary colors of the RGB model.
He thought that the colors red, yellow, green, and blue are special in that any other color can be described as a mix of them, and that they exist in opposite pairs. That is, either red or green is perceived and never greenish-red: Even though yellow is a mixture of red and green in the RGB color theory, the eye does not perceive it as such.
Instead, it traditionally treats light blue (голубой, goluboy) as a separate color independent from plain or dark blue (синий, siniy), with all seven "basic" colors of the spectrum (red–orange–yellow–green– голубой / goluboy (sky blue, light azure, but does not equal cyan)– синий / siniy ("true" deep blue, like ...
Color blind glasses (e.g. EnChroma) may help the red–green color blind at some color tasks, [2] but they do not grant the wearer "normal color vision" or the ability to see "new" colors. [4] Some mobile apps can use a device's camera to identify colors.
Electric blue is a color whose definition varies but is often considered close to cyan, and which is a representation of the color of lightning, an electric spark, and the color of ionized argon gas; it was originally named after the ionized air glow produced during electrical discharges, though its meaning has broadened to include shades of blue that are metaphorically "electric" by virtue of ...
Sonic the Hedgehog, [a] trademarked Sonic The Hedgehog, [1] is a blue anthropomorphic hedgehog and the main protagonist of the series. Developed as a replacement for their existing Alex Kidd mascot, as well as Sega's response to Mario, his first appearance was in the arcade game Rad Mobile as a cameo, before making his official debut in Sonic the Hedgehog (1991).