5Color and Mood http://www.infoplease.com/spot/colors1.html Black Black is the color of authority and power. It is popular in fashion because it makes people appear thinner. It is also stylish and timeless. Black also implies submission. Priests wear black to signify submission to God. Some fashion experts say a woman wearing black implies submission to men. Black outfits can also be overpowering, or make the wearer seem aloof or evil. Villains, such as Dracula, often wear black.YellowCheerful sunny yellow is an attention getter. While it is considered an optimistic color, people lose their tempers more often in yellow rooms, and babies will cry more. It is the most difficult color for the eye to take in, so it can be overpowering if overused. Yellow enhances concentration, hence its use for legal pads. It also speeds metabolism.PurpleThe color of royalty, purple connotes luxury, wealth, and sophistication. It is also feminine and romantic. However, because it is rare in nature, purple can appear artificial.
12RGB SchemeWhat is the RGB scheme?Where do you use it?
13RGB SchemeAn additive color system, since you add light from the primary colors to make new colors.The values for Red, Green, and Blue may be specified in percent (0–100); or in a scale from 0–255 (decimal) or 00–FF (hex)—where 255 or FF = 100%.Remember: higher numbers mean more of each color of light.More is lighter, less is darker!
14RGB Scheme Red = (255,0,0) Green = (0,255,0) Blue = (0,0,255) Magenta = (255,0,255)Yellow = (255,255,0)What’s #ff00ff?
15HSB Scheme This scheme is a device-independent way to describe color Hue Saturation Brightness
17HSB Model Hue is the actual color. Measured in angular degrees counter- clockwise around the cone starting and ending at red = 0 or 360 (yellow = 60, green = 120, etc.). Saturation is the purity of the color, measured in percent from the center of the cone (0) to the surface (100).At 0% saturation, hue is meaningless. Brightness is measured in percent from black (0) to white (100).At 0% brightness, both hue and saturation are meaningless.
18More about saturation White, black, and grays are 0% saturated A color becomes more saturated as it moves away from gray to a pure colorA pure (fully-saturated) color, in RGB terms, is:Only red, green, or blue, orOnly yellow (= red + green), orOnly magenta (= red + blue)A saturated color can have a range of brightnesses
25Color Combinations Create aesthetic color combinations! Use adjacent colors on the color wheel (analogous)Use opposing colors on the color wheel (complementary)Use colors at the corners of a symmetrical polygon (triadic and quadratic)Use color combinations found in nature
26Monochromatic 1 Hue, possibly in different values Looks clean and elegantMonochromatic colors go well together, producing a soothing effect.
30Triadic 3 colors at corners of equilateral triangle Often vibrant, even if you use pale or unsaturated versions of your hues.Colors should be carefully balanced - let one color dominate and use the two others for accent.
34Analogous 3-5 adjacent hues Use to create serene and comfortable designs. Often found in nature and are harmonious and pleasing to the eye.Make sure you have enough contrast when choosing an analogous color scheme.Choose one color to dominate, a second to support. The third color is used (along with black, white or gray) as an accent.
36Split Complementary Variation of complementary scheme. Uses a base color and the two colors adjacent to its complement.This color scheme has the same strong visual contrast as the complementary color scheme, but has less tension.Split-complimentary color scheme is often a good choice for beginners.
37Useful Tools http://www.colorsontheweb.com/colorwizard.asp (for color blindness)
39Background/Foreground Use warmer colors for foreground element Use cooler colors for background elements
40Grouping ElementsLight gray is a safe color to use for grouping elements without competing with other colorsWhite may also be OK
41Using Saturation Wisely Use saturated colors (pure hues) when you want to attract attentionUse desaturated colors when performance and efficiency are the priorityDesaturated, bright colors are perceived as friendly and professionalDesaturated, dark colors are perceived as serious and professionalSaturated colors are perceived as more exciting and dynamicBe careful when combining saturated colors! They can visually interfere with each other and cause fatigue
42SymbolismThere is no substantive evidence supporting general effects of color on emotion and mood. However…Verify the meaning of colors and color combinations for a particular target audience prior to useMore about this in The Power of Color by Morton Walker, 1991.
43Highlighting Color is a potentially effective highlighting technique Should be used sparingly and only with other highlighting techniquesSuch as bold or maybe changing type Highlight using a few desaturated colors that are clearly distinct from one another
44Interference EffectsBreak mental models and cause user to either make mistakes or take longer to understandStroop Inference
45Contrast of Light and Dark Dark Colors come forwardLight colors stay in the backTrue for both grayscale and colorUse high contrast when you want to make a loud statement