HCI 201 Multimedia and the World Wide Web
Fall 1999 - Section 703 - The RGB Color Space
Additive Color -- The Color System of Light
Red Green Blue
The combination of all three makes white.
The absence of all three leaves black.
- The RGB color system is a 24-bit system.
- The system uses 8 bits for each of three color channels.
- A color in RGB notation has a set of two hexidecimal numbers to represent each of the three channels.
- Hexidecimal numbers are base-16.
- Base10 10= A in Base16
- Base10 11=B in Base16
- Base10 12=C in Base16
- Base10 13=D in Base16
- Base10 14=E in Base16
- Base10 15=F in Base16
- 8 bits (two hexidecimal numbers, e.g. 00 or 6A ) can represent 256 values, 0-255.
- Three sets of 256 can represent 16,777,216 colors.
However, there are far more monitors that are 8-bit (only 256 colors) than 24-bit.
In addition, we have to take into account the color palette supported by Web browsers...
We need to use the Web-Safe color palette.
Week 3
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