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Diablo 1 PAL File Format - Color Palettes

1. Description
2. File structure
3. {PALETTE COLOR} (3 bytes)

1. Description

Diablo 1 color palettes use the .pal file extension.
Color palettes are sets of 256 colors used to render CEL/CL2 graphics.

2. File structure

{PALETTE COLOR} * 256

3. {PALETTE COLOR} (3 bytes)

{RED COMPONENT} {GREEN COMPONENT} {BLUE COMPONENT}

Each color is 3 bytes. First byte is the red color component, second is the green color component and third is the blue color component.

When a CEL/CL2 graphics file refers to a palette color, it uses a one byte {PALETTE INDEX} in the [0x00, 0xFF] range.
This index refers to the {PALETTE INDEX}th color in the color palette.
To find the corresponding {COLOR PALETTE OFFSET} in the color palette file, use the following formula:

{COLOR PALETTE OFFSET} = 3 * {PALETTE INDEX}