...a primary color, with many meanings.

Red can symbolize passion. Some say it can raise blood pressure, speed the pulse. Do people that drive red cars drive faster or is this an illusion? Red can be a carefree, spirited color. It is also the seriously stimulating color of emergencies and blood and fire. Red can also suggest happiness. It is often used to suggest a sale or discount. It is a traditional religious color used for very special events.
And red can be very stimulating! Sometimes it can be overstimulating in large doses. Red shouts for attention. Choosing a little red or a lot or somewhere in between should be directly related to the effect or mood you are trying to convey.

Here is just a sampling of combinations using web safe colors. Experiment for yourself.
Red can invoke memories of red wagons, falling leaves, bicycles, old barns, and times gone by. Red can also make one think of particular sports teams, school colors and certain political campaigns. Of course, most colors can.

Red is a color with many variations in intensity and temperature... red can be hot, warm, cool, deep and rich, light and subdued, cozy and warm, sophisticated, comfortable.
Red can be combined with many other colors to create even more moods and effects.
warm and comfy deep and rich cool and sophisticated
sweet and antique warm and spicy traditional

red can also be...

electric heavy and subdued light and bright
calm and quiet earthy bloody

red in reverse...

A sampling of red text.

warm and comfy deep and rich cool and sophisticated
sweet and antique warm and spicy traditional red
electric heavy and subdued light and bright
calm and quiet earthy blood red

red by the number

A palette of web safe blues by the hexidecimal number. Tints (pinks) included.

ff3300 ff0000 cc0000
990000 ffcccc ff9999
cc6666 ff3333 ff0033
cc0033 cc9999 cc6666
cc3333 993333 990033
330000 ff6699 ff3366
ff0066 cc3366 996666
663333 ff99cc ff3399
ff0099 cc0066 993366
660033 ff66cc ff00cc
ff33cc cc6699  

red by the name

These reds by the name are mostly not web safe. Web safe reds are marked with an asterick *. Tints (pinks) included.

crimson darkred firebrick
indianred orangered *red
maroon palevioletred pink
mediumvioletred deeppink *fuchsia
*magenta hotpink tomato
lightpink mistyrose lightcoral
lavenderblush