Küül Color System organizes shades as level.reflect:
- Level (1-10): Color depth. 1 = black, 10 = lightest blonde.
- Primary reflect: First digit after the dot. .1 = ash, .2 = pearl/iridescent, .3 = gold, .4 = copper, .5 = mahogany, .6 = red, .7 = violet.
- Secondary reflect: Second digit after the dot. For example
7.64= level 7, red (primary) copper (secondary);7.44= intensified copper.
Named shades (Chocolate 5.31, Mocha 5.45, Latte Macchiato 7.31, Cappuccino 7.35, Burgundy 4.65) are blends of brown and mahogany reflects from its fashion line.
Note: Küül's reflect numbering differs from the universal standard. Its .2 is pearl/iridescent (violet), not matte as in other brands; its .7 is violet. When looking up equivalents, use the shade name alongside the code.