CMYK ↔ RGB ↔ HEX Color Converter
About Image Duotone Generator
The Spotify-Style Duotone Photo Gradient Generator maps image luminance (dark shadows to bright highlights) across a 2-color gradient ramp (e.g. Electric Blue + Hot Pink, Deep Purple + Acid Green) with real-time contrast controls.
How to Use Image Duotone Generator
Step 1
Upload an image file (PNG, JPG, WebP).
Step 2
Select a duotone preset or pick custom Shadow and Highlight colors.
Step 3
Fine-tune contrast and balance sliders to achieve desired punch.
Step 4
Click "Download Duotone Image".
Practical Use Cases for Image Duotone Generator
Creating Spotify-Style Album Art & Podcast Covers
Generate striking two-tone chromatic contrast graphics for music covers, artist thumbnails, and tech festival posters.
Consistent Multi-Author Blog Avatars
Apply high-impact duotone gradients across contributor photos to unify disparate photography styles into a cohesive brand aesthetic.
Input & Output Examples
Applying Cyberpunk Duotone (Purple Shadows / Cyan Highlights)
Shadow Color: `#4c1d95` (Deep Purple) | Highlight Color: `#06b6d4` (Cyan)
Stylized two-tone graphic where dark areas become violet and highlights become neon cyan
Key Features & Performance
- ✓Curated Duotone Presets: Cyberpunk (Purple/Cyan), Spotify Green (Black/Neon Green), Sunset (Dark Red/Yellow), Vaporwave (Navy/Pink), Classic Sepia (Brown/Cream).
- ✓Custom Shadow and Highlight color pickers.
- ✓Contrast and brightness pre-boost sliders for maximum dynamic range.
- ✓100% Client-Side memory execution.
- ✓1-Click Download duotone image or copy SVG `<feColorMatrix>` filter.
Key Terminology & Definitions
Duotone Effect
A photographic reproduction process using two contrasting colors: one color replacing dark shadow tones and a second color replacing bright highlight tones.
Gradient Map Lookup Table (LUT)
An array of 256 interpolated RGB values mapping grayscale luminance values (0-255) to color coordinates.