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name: hex-color-prompting description: Using hex color codes for precise color specification

Hex Color Prompting

FLUX supports hex color codes (#RRGGBB) for precise color specification, essential for brand consistency and exact color matching.

Syntax

Include hex codes directly in your prompt with descriptive names:

A modern living room with walls painted in #2C3E50 (dark blue-gray),
accent pillows in #E74C3C (vibrant red), and a #F39C12 (warm amber)
throw blanket on a #ECF0F1 (off-white) sofa

Signal Keywords

Use these keywords to indicate color specification:

color #02eb3c
hex #edfa3c
in #FF5733
using color code #3498DB

Best Practices

1. Always Pair with Description

Never use hex codes alone - include the color name:

Good: #FF6B6B (coral pink)
Bad: #FF6B6B

2. Associate with Specific Objects

Clearly connect colors to their targets:

A product shot featuring a smartphone with a #1DA1F2 (Twitter blue) case,
resting on a #14171A (near black) matte surface

3. Limit Color Palette

3-5 colors typically work best. Too many can confuse the model:

Color palette for the scene: #2ECC71 (emerald green), #3498DB (sky blue),
#F1C40F (sunflower yellow), #FFFFFF (pure white)

Use Cases

Brand Colors

Corporate office reception with brand colors prominently featured:
walls in #0066CC (company blue), accent furniture in #FF6600 (company orange),
logo displayed in #FFFFFF (white) against the blue backdrop

Interior Design

Scandinavian minimalist bedroom with #F5F5F5 (warm white) walls,
#8B4513 (saddle brown) wooden headboard and nightstands,
#708090 (slate gray) linen bedding, and #DAA520 (goldenrod) accent lamp

Fashion

Editorial fashion photo: model wearing #000000 (black) cashmere turtleneck,
#FF4500 (orange-red) wide-leg wool pants, #C0C0C0 (silver) geometric earrings,
against a #F0F0F0 (light gray) studio backdrop

Product Design

Premium headphones product shot: #1C1C1E (space gray) aluminum body,
#F5F5F7 (silver) mesh ear cups, #FF9500 (iOS orange) accent ring around controls

Digital Art

Synthwave cityscape: #FF00FF (magenta) and #00FFFF (cyan) neon signs,
#1A1A2E (deep navy) night sky, #E94560 (hot pink) setting sun on horizon,
#16213E (dark blue) building silhouettes, rain-slicked streets reflecting lights

Data Visualization

Infographic showing market share: segments in #2ECC71 (green) for growth,
#E74C3C (red) for decline, #3498DB (blue) for stable, #95A5A6 (gray) for other,
clean #FFFFFF (white) background

Gradient Colors

Specify gradients with start and end colors:

Abstract background starting with color #02eb3c (bright green) and
finishing with color #edfa3c (lime yellow), smooth horizontal gradient

Sunset sky gradient from #FF6B6B (coral) at horizon through
#FFA07A (light salmon) to #87CEEB (sky blue) at top

Color Harmony Patterns

Complementary (Opposite on color wheel)

Scene using complementary colors: #3498DB (blue) dominant with
#E67E22 (orange) accents for visual pop

Analogous (Adjacent colors)

Harmonious palette using analogous colors: #9B59B6 (purple),
#8E44AD (deep purple), #3498DB (blue) - flowing naturally together

Triadic (Evenly spaced)

Vibrant triadic scheme: #E74C3C (red), #F1C40F (yellow),
#3498DB (blue) - balanced and dynamic

Monochromatic (Single hue variations)

Sophisticated monochromatic blue: #1A5276 (dark navy), #2980B9 (medium blue),
#85C1E9 (light blue), #D4E6F1 (pale blue) - elegant depth

Combining with JSON Structured Prompts

{
  "scene": {
    "setting": "modern tech startup office",
    "mood": "innovative, energetic"
  },
  "colors": {
    "primary": "#6C5CE7 (electric purple)",
    "secondary": "#00CEC9 (teal)",
    "accent": "#FD79A8 (pink)",
    "neutral": "#DFE6E9 (light gray)",
    "dark": "#2D3436 (charcoal)"
  },
  "application": {
    "walls": "neutral #DFE6E9",
    "furniture": "dark #2D3436",
    "accent_pieces": "primary #6C5CE7",
    "plants": "secondary #00CEC9 pots"
  }
}

Common Brand Color References

For reference only - always verify current brand guidelines:

# Social Media
Twitter/X Blue: #1DA1F2
Facebook Blue: #1877F2
Instagram Gradient: #833AB4 to #FD1D1D
LinkedIn Blue: #0A66C2

# Tech
Apple Gray: #1C1C1E
Google Blue: #4285F4
Microsoft Blue: #00A4EF
Amazon Orange: #FF9900

# Design
Figma Purple: #A259FF
Dribbble Pink: #EA4C89
Behance Blue: #1769FF

Troubleshooting

Color Not Accurate

• Add the color name alongside hex
• Specify the exact object the color applies to
• Use fewer total colors in the prompt

Color Bleeding

• Clearly delineate which objects get which colors
• Use spatial descriptions: "the LEFT chair in #color"

Muddy Colors

• Check hex code accuracy
• Specify lighting that won't shift colors
• Use "maintaining exact color #XXXXXX" for emphasis