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The laws of contrast of colour ⠃⠗⠋ braille edition

Grade 2 — contracted English braille (EBAE-compatible subset). Translated on this server by our own braille engine (BRF — Braille Ready Format, Library of Congress fdd000551). View Grade 1 instead.

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367,087 braille cells · 380 embossed pages at 40×25 · 817 unrepresentable characters omitted

⠙⠑⠎⠉⠗⠊⠃⠑⠀⠮⠀⠑⠋⠋⠑⠉⠞⠀⠷⠀⠱⠊⠞⠑⠀⠊⠝⠞⠻⠏⠕⠎⠫⠀⠃⠑⠞⠺⠑⠢
⠀⠮⠀⠀⠃⠔⠜⠽⠀⠉⠕⠍⠏⠇⠑⠍⠢⠞⠜⠽⠀⠁⠎⠎⠕⠗⠞⠍⠢⠞⠎⠂⠀⠕⠗⠀
⠃⠑⠞⠺⠑⠢⠀⠑⠁⠡⠀⠷⠀⠮⠀⠉⠕⠍⠏⠇⠑⠍⠢⠞⠜⠽⠀⠀⠉⠕⠇⠳⠗⠎⠲⠀⠀⠀⠀
⠠⠊⠇⠇⠥⠌⠗⠁⠞⠊⠕⠝⠒⠀⠠⠠⠏⠇⠁⠞⠑⠀⠠⠠⠧⠊⠊⠊⠲⠀⠀⠀⠀⠼⠁⠓⠚⠲⠀
⠼⠁⠲⠀⠠⠗⠫⠀⠯⠀⠠⠛⠗⠑⠢⠀⠁⠗⠑⠀⠷⠀⠁⠇⠇⠀⠉⠕⠍⠏⠇⠑⠍⠢⠞⠜⠽⠀
⠉⠕⠇⠳⠗⠎⠀⠮⠀⠍⠕⠌⠀⠀⠑⠟⠥⠁⠇⠀⠔⠀⠙⠑⠏⠹⠆⠀⠿⠀⠗⠫⠂⠀⠵⠀
⠗⠑⠛⠜⠙⠎⠀⠊⠞⠎⠀⠃⠗⠊⠇⠇⠊⠁⠝⠉⠽⠂⠀⠊⠎⠀⠍⠊⠙⠺⠁⠽⠀⠃⠑⠞⠺⠑⠢⠀
⠽⠑⠇⠇⠪⠀⠯⠀⠃⠇⠥⠑⠆⠀⠯⠀⠔⠀⠛⠗⠑⠢⠀⠘⠮⠀⠞⠺⠕⠀⠑⠭⠞⠗⠑⠍⠑⠎⠀
⠁⠗⠑⠀⠥⠝⠊⠞⠫⠲⠀⠼⠃⠲⠀⠠⠮⠀⠀⠁⠗⠗⠁⠝⠛⠑⠍⠢⠞⠂⠀⠱⠊⠞⠑⠂⠀⠗⠫⠂
⠀⠛⠗⠑⠢⠂⠀⠱⠊⠞⠑⠂⠀⠉⠲⠂⠀⠊⠎⠀⠝⠀⠙⠑⠉⠊⠙⠫⠇⠽⠀⠎⠥⠏⠻⠊⠕⠗⠀⠀
⠞⠕⠀⠮⠀⠏⠗⠑⠉⠫⠬⠂⠀⠁⠞⠀⠇⠑⠁⠌⠀⠱⠢⠀⠮⠀⠉⠕⠇⠳⠗⠎⠀⠁⠗⠑⠀⠝⠀
⠙⠑⠑⠏⠲⠀⠼⠉⠲⠀⠠⠮⠀⠀⠁⠗⠗⠁⠝⠛⠑⠍⠢⠞⠀⠱⠊⠞⠑⠂⠀⠗⠫⠂⠀⠱⠊⠞⠑⠂
⠀⠛⠗⠑⠢⠂⠀⠱⠊⠞⠑⠂⠀⠉⠲⠂⠀⠎⠑⠑⠍⠎⠀⠞⠕⠀⠍⠑⠀⠊⠝⠋⠻⠊⠕⠗⠀⠀⠞⠕
⠀⠮⠀⠏⠗⠑⠉⠫⠬⠲⠀⠀⠀⠀⠼⠁⠓⠁⠲⠀⠼⠁⠲⠀⠠⠃⠇⠥⠑⠀⠯⠀⠠⠕⠗⠁⠝⠛⠑⠀
⠁⠗⠑⠀⠍⠀⠕⠏⠏⠕⠎⠫⠀⠞⠕⠀⠑⠁⠡⠀⠕⠮⠗⠀⠹⠁⠝⠀⠗⠫⠀⠯⠀⠀⠛⠗⠑⠢⠂⠀
⠃⠑⠉⠁⠥⠎⠑⠀⠮⠀⠇⠑⠁⠌⠀⠃⠗⠊⠇⠇⠊⠁⠝⠞⠀⠉⠕⠇⠳⠗⠀⠃⠇⠥⠑⠂⠀⠊⠎⠀
⠎⠑⠏⠜⠁⠞⠫⠂⠀⠱⠊⠇⠑⠀⠀⠮⠀⠍⠕⠌⠀⠃⠗⠊⠇⠇⠊⠁⠝⠞⠀⠁⠗⠑⠀
⠉⠕⠍⠃⠔⠫⠀⠔⠀⠕⠗⠁⠝⠛⠑⠲⠀⠼⠃⠲⠀⠠⠮⠀⠁⠗⠗⠁⠝⠛⠑⠍⠢⠞⠂⠀
⠱⠊⠞⠑⠂⠀⠀⠕⠗⠁⠝⠛⠑⠂⠀⠃⠇⠥⠑⠂⠀⠱⠊⠞⠑⠂⠀⠉⠲⠂⠀⠊⠎⠀
⠁⠛⠗⠑⠑⠁⠃⠇⠑⠲⠀⠼⠉⠲⠀⠠⠮⠀⠁⠗⠗⠁⠝⠛⠑⠍⠢⠞⠂⠀⠱⠊⠞⠑⠂⠀⠀
⠕⠗⠁⠝⠛⠑⠂⠀⠱⠊⠞⠑⠂⠀⠃⠇⠥⠑⠂⠀⠱⠊⠞⠑⠀⠉⠲⠂⠀⠊⠎⠀⠁⠇⠎⠕⠀
⠁⠛⠗⠑⠑⠁⠃⠇⠑⠲⠀⠀⠀⠀⠼⠁⠓⠃⠲⠀⠼⠁⠲⠀⠠⠽⠑⠇⠇⠪⠀⠯⠀⠠⠧⠊⠕⠇⠑⠞
⠀⠿⠍⠀⠁⠝⠀⠁⠗⠗⠁⠝⠛⠑⠍⠢⠞⠀⠱⠊⠡⠂⠀⠵⠀⠗⠑⠛⠜⠙⠎⠀⠀⠙⠑⠏⠹⠀⠷⠀
⠞⠕⠝⠑⠂⠀⠊⠎⠀⠍⠕⠌⠀⠙⠊⠌⠔⠉⠞⠂⠀⠎⠔⠉⠑⠀⠮⠀⠇⠑⠁⠌⠀⠊⠝⠞⠢⠎⠑⠀
⠕⠗⠀⠇⠊⠛⠓⠞⠑⠌⠀⠀⠉⠕⠇⠳⠗⠂⠀⠮⠀⠽⠑⠇⠇⠪⠂⠀⠊⠎⠀⠎⠑⠏⠜⠁⠞⠫⠀⠋

These are the same pages the .brf download embosses — form-feed breaks and all. BRF opens in braille software (Duxbury, BrailleBlaster), on embossers, and on refreshable displays.