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RGBA stands for red green blue alpha. While it is sometimes described as a color space , it is actually a three-channel RGB color model supplemented with a fourth alpha channel . Alpha indicates how opaque each pixel is and allows an image to be combined over others using alpha compositing , with transparent areas and anti-aliasing of the edges ...
80° Yellow Green, 120° Lime Green, 280° Dark Orchid 100%/50% 0° Red, 16° Orange Red, 33° Dark Orange, 39° Orange, 51° Gold, 60° Yellow, 90° Chartreuse, 120° (Lime) Green, 150° Spring Green, 180° Aqua / Cyan, 195° Deep Sky Blue, 240° Blue, 300° Fuchsia / Magenta
Safety yellow is one of the standard high-visibility safety colors defined by ANSI standard Z535, which specifies standards for safety and accident prevention information. It is often used on hazard symbols , warning signs , guard rails , dangerous equipment, older American civil defense sirens (typically from the 1950s and 1960s), and some ...
These computers used a modified "dark yellow" color that appeared to be brown. On displays designed for the IBM PC, setting a color "bright" added ⅓ of the maximum to all three channels' brightness, so the "bright" colors were whiter shades of their 3-bit counterparts. Each of the other bits increased a channel by ⅔, except that dark yellow ...
Among their other color pairs, brown (#282800) on dark green (#A0A000) has a contrast ratio of 3.24:1, which is less than the WCAG recommendation, dark brown (#1E1E00) on light green (#B9B900) has a contrast ratio of 4.54:1 and blue (#00007D) on yellow (#FFFF00) has a contrast ratio of 11.4:1. The colors named in the report use different color ...
In theory, such combinations should produce black, but produce brown because most commercially available blue pigments tend to be comparatively weaker; [citation needed] the stronger red and yellow colors prevail, thus creating the following tones. The color brown can also be made if multiple paint colors are added to each other.
The rg chromaticity space is used in computer vision applications, and shows the color of light (red, yellow, green, etc.), but not its intensity (dark, bright). LMS color space (long, medium, short), a perceptual color space based on the response functions of the cones in the retina of the eye. It is mostly used in psychophysical research.
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