Part of this answer to a Stack Overflow question by s.gang.
Here’s a GIMP palette file for R3G3B2 pixel packing of RGB images into one byte per pixel.
- Copy the below block into a file called “r3g3b2.gpl” somewhere convenient on your disk.
- In the GIMP Palettes panel, right-click and select “Import Palette.” Choose the “Palette File” option and navigate to r3g3b2.gpl:
- Open your image as Indexed.
- Select the Colors menu | Map | Set Colormap…
- Click the palette-name button and then choose “r3g3b2”:
- Hit Close, then OK, and you should have color!
Note: R3G3B2 is a very low-color-resolution format, so the image will probably look terrible.
r3g3b2.gpl
GIMP Palette Name: R3G3B2 # 0 0 0 0 0 85 0 0 170 0 0 255 0 36 0 0 36 85 0 36 170 0 36 255 0 72 0 0 72 85 0 72 170 0 72 255 0 109 0 0 109 85 0 109 170 0 109 255 0 145 0 0 145 85 0 145 170 0 145 255 0 182 0 0 182 85 0 182 170 0 182 255 0 218 0 0 218 85 0 218 170 0 218 255 0 255 0 0 255 85 0 255 170 0 255 255 36 0 0 36 0 85 36 0 170 36 0 255 36 36 0 36 36 85 36 36 170 36 36 255 36 72 0 36 72 85 36 72 170 36 72 255 36 109 0 36 109 85 36 109 170 36 109 255 36 145 0 36 145 85 36 145 170 36 145 255 36 182 0 36 182 85 36 182 170 36 182 255 36 218 0 36 218 85 36 218 170 36 218 255 36 255 0 36 255 85 36 255 170 36 255 255 72 0 0 72 0 85 72 0 170 72 0 255 72 36 0 72 36 85 72 36 170 72 36 255 72 72 0 72 72 85 72 72 170 72 72 255 72 109 0 72 109 85 72 109 170 72 109 255 72 145 0 72 145 85 72 145 170 72 145 255 72 182 0 72 182 85 72 182 170 72 182 255 72 218 0 72 218 85 72 218 170 72 218 255 72 255 0 72 255 85 72 255 170 72 255 255 109 0 0 109 0 85 109 0 170 109 0 255 109 36 0 109 36 85 109 36 170 109 36 255 109 72 0 109 72 85 109 72 170 109 72 255 109 109 0 109 109 85 109 109 170 109 109 255 109 145 0 109 145 85 109 145 170 109 145 255 109 182 0 109 182 85 109 182 170 109 182 255 109 218 0 109 218 85 109 218 170 109 218 255 109 255 0 109 255 85 109 255 170 109 255 255 145 0 0 145 0 85 145 0 170 145 0 255 145 36 0 145 36 85 145 36 170 145 36 255 145 72 0 145 72 85 145 72 170 145 72 255 145 109 0 145 109 85 145 109 170 145 109 255 145 145 0 145 145 85 145 145 170 145 145 255 145 182 0 145 182 85 145 182 170 145 182 255 145 218 0 145 218 85 145 218 170 145 218 255 145 255 0 145 255 85 145 255 170 145 255 255 182 0 0 182 0 85 182 0 170 182 0 255 182 36 0 182 36 85 182 36 170 182 36 255 182 72 0 182 72 85 182 72 170 182 72 255 182 109 0 182 109 85 182 109 170 182 109 255 182 145 0 182 145 85 182 145 170 182 145 255 182 182 0 182 182 85 182 182 170 182 182 255 182 218 0 182 218 85 182 218 170 182 218 255 182 255 0 182 255 85 182 255 170 182 255 255 218 0 0 218 0 85 218 0 170 218 0 255 218 36 0 218 36 85 218 36 170 218 36 255 218 72 0 218 72 85 218 72 170 218 72 255 218 109 0 218 109 85 218 109 170 218 109 255 218 145 0 218 145 85 218 145 170 218 145 255 218 182 0 218 182 85 218 182 170 218 182 255 218 218 0 218 218 85 218 218 170 218 218 255 218 255 0 218 255 85 218 255 170 218 255 255 255 0 0 255 0 85 255 0 170 255 0 255 255 36 0 255 36 85 255 36 170 255 36 255 255 72 0 255 72 85 255 72 170 255 72 255 255 109 0 255 109 85 255 109 170 255 109 255 255 145 0 255 145 85 255 145 170 255 145 255 255 182 0 255 182 85 255 182 170 255 182 255 255 218 0 255 218 85 255 218 170 255 218 255 255 255 0 255 255 85 255 255 170 255 255 255
makepal.py
This is the Python script I used to generate r3g3b2.gpl.
#!/usr/bin/python3
# makepal.py: Copyright (c) 2016 cxw. CC-BY.
print("""\
GIMP Palette
Name: R3G3B2
#""")
# Print an R3G3B2 palette
for red in [int(x*255.0/7) for x in range(8)]:
for green in [int(x*255.0/7) for x in range(8)]:
for blue in [int(x*255.0/3) for x in range(4)]:
print("%3d %3d %3d"%(red, green, blue))
# vi: set ts=4 sts=4 sw=4 et ai: #
I Fight for the Users 