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The A subtractive colour model producing colour when light is reflected off an object or surface. The reflected light determines what colour we see when we look at that object. A perfectly white surface reflects all wavelengths of A black surface absorbs all wavelengths. The three primary colours in the subtractive colour model are cyan, magenta and yellow. In theory, combining all three primaries produces black. In practice, impurities in the ink pigments degrade the black to a muddy brown, as mentioned earlier. To resolve this, black is added to the model. The K designation represents the black component of the CMYK model. This is the model used for colour systems which use reflected light to generate colours, including desktop printers and the printing The HSBmodel This mode approximates the way in which the human eye perceives colour. Colour is defined by three components - hue, saturation and brightness. Hue refers to the name of the colour, for example red. Saturation defines the intensity of the colour, i.e. how vibrant the colour is. Brightness defines the lightness or darkness of the TheHLSmodel Similar to the HSB model, the HLS model contains three components - hue, lightness and saturation. The lightness component is similar to the brightness component in the HSB model. Hue and saturation are the same as in the HSB model. L “a “bmodel Based on the original CIE (Commission Internationale de YEclairage) model, the L*a*b model is based on the way the human eye perceives colour. It contains a luminance (or lightness) component (L) and two chromatic components - the ‘a’ component (green to red) and the ’b’ component (blue to yellow). design