Tattoo Ink Dilution Calculator
Calculate grey wash and watercolor tattoo ink dilution ratios.
Get exact ink-to-water volumes for five shade levels from light wash to solid black.
Tattoo Ink Dilution — Grey Wash and Watercolor
Diluting black tattoo ink with distilled water creates grey wash shading sets. The ink-to-water ratio determines the shade value for each wash.
Standard five-shade grey wash set:
| Shade | Ink % | Water % | Use |
|---|---|---|---|
| #1 Whip shade | 10% | 90% | Lightest shadow, skin depth simulation |
| #2 Light wash | 25% | 75% | Subtle shading, distant shadows |
| #3 Medium wash | 50% | 50% | General shading, mid-tones |
| #4 Dark wash | 75% | 25% | Deep shadows, contrast areas |
| #5 Solid black | 100% | 0% | Outlines, darkest fills |
Important — always use distilled water: Tap water contains chlorine and minerals that can alter ink pH, cause skin reactions, or separate the pigment suspension. Distilled water is the only safe dilution medium.
Pre-made grey wash vs. DIY: Pre-made grey wash sets (World Famous, Intenze, Kuro Sumi) have consistent pigment loads and are recommended for professionals. DIY dilution is common for practice or when matching a specific black ink you already use.
For watercolor tattoo style: Watercolor effects use much higher water ratios than standard grey wash. Typical watercolor splash: 5-15% ink with water, applied with tapping motion. True “watercolor” tattoos use no outline and rely entirely on diluted color for form.
How to mix:
- Measure ink into a clean ink cap
- Add distilled water dropwise and stir with a clean tool
- Test on paper towel before use
- Label each cap with its ratio
- Use within 4 hours — ink and water can separate over time
Black ink selection for grey wash: Not all black inks dilute well. Carbon-based blacks (Eternal, Kuro Sumi) dilute cleanly. Iron oxide blacks can look muddy when heavily diluted. Test your ink before tattooing.