About This Tool
Convert CMYK (Cyan, Magenta, Yellow, Key/Black) print colors to RGB (Red, Green, Blue) screen colors. CMYK is used in print design (offset printing, digital press), while RGB is used for digital displays (web, mobile, TV). This tool helps bridge the gap between print and digital color workflows.
Frequently Asked Questions
- Why do colors look different in CMYK vs RGB?
- CMYK (subtractive) and RGB (additive) use fundamentally different color models. CMYK has a smaller color gamut — some bright RGB colors (neon green, electric blue) cannot be accurately reproduced in CMYK print. This tool provides the closest RGB approximation.
- When would I need CMYK to RGB conversion?
- When adapting print designs for web/digital use, previewing print colors on screen, converting brand guidelines from print CMYK specs to web hex codes, or importing print assets into digital design tools.
- Is the conversion mathematically exact?
- The mathematical formula (R = 255 × (1-C) × (1-K)) gives a close approximation. For color-critical work, use ICC color profiles in professional software like Adobe Photoshop, as actual print output depends on ink, paper, and press calibration.
- What is the K (Key) channel?
- K represents black ink. While combining C, M, and Y at 100% theoretically produces black, real inks create a muddy brown. Adding a dedicated black channel (K) produces true blacks and saves expensive color ink in printing.