HEX Color Code Prompting - Black Forest Labs

FLUX.2 supports precise color matching using hex codes. Useful for brand consistency, design work, and any scenario where exact colors matter. Signal hex colors with keywords like “color” or “hex” followed by the code, and associate each hex value clearly with a specific object or surface.

Basic Syntax

Signal hex colors with keywords like “color” or “hex” followed by the code:

Basic hex color syntax example with blue apple illustration

Apple: #0047AB

Walls: #C4725ASofa: #1B6B6FAccent: #E8A847

Sunflower with hex color prompting

Sunflower: #C92695

Liquid lucid composition with hex colors

#00FF2F#0D00FF#FF0000

Gradient Colors

Apply gradients by specifying start and end colors:

Vase with gradient colors

Start: #02eb3cEnd: #edfa3cFlowers: #ff0088

Round silk throw pillow with radial gradient

Center: #6A0DADEdges: #FFD700

Panoramic sky with three horizontal gradient color zones

Upper: #1B0A3EMiddle: #CF6A2EHorizon: #E8728A

Product shot with pink-to-purple-to-blue gradient backdrop

Pink: #FF0080Violet: #7928CACobalt: #0070F3

Hex codes work best when clearly associated with specific objects. Vague references like “use #FF0000 somewhere” may produce inconsistent results.