Sovereignty Module: Color the World
Color the World
Complete Natural Dyeing, Pigment Extraction, and Color Fixing Guide
Complete Natural Dyeing, Pigment Extraction, and Color Fixing Guide
Color transforms plain cloth into identity, beauty, and communication. Natural dyes from plants, minerals, and insects produce permanent, beautiful colors when properly mordanted. This campaign covers dye sources, mordanting, and dyeing techniques.
Chapter 1: Dye Sources by Color
| Color | Plant Source | Part Used | Mordant | Lightfastness |
|---|---|---|---|---|
| Yellow | Onion skins | Outer skins | Alum | Good |
| Yellow | Weld (Reseda luteola) | Whole plant | Alum | Excellent |
| Yellow-gold | Turmeric | Root (ground) | None needed | Poor (fades) |
| Orange | Madder (light bath) | Root | Alum | Excellent |
| Red | Madder (Rubia tinctorum) | Root | Alum + calcium | Excellent |
| Red (brilliant) | Cochineal (insect) | Dried insects | Alum + tin | Excellent |
| Blue | Indigo (Indigofera) | Leaves | None (vat dye) | Excellent |
| Blue | Woad (Isatis tinctoria) | Leaves | None (vat dye) | Good |
| Green | Indigo + weld (overdye) | Combined | Both processes | Good-excellent |
| Purple | Logwood (Haematoxylum) | Heartwood | Alum + iron | Moderate |
| Brown | Walnut hulls | Green outer hull | None needed | Excellent |
| Brown | Tea/coffee | Leaves/beans | Iron | Moderate |
| Black | Oak galls + iron | Galls + iron mordant | Iron | Excellent |
| Black | Logwood + iron | Heartwood | Iron | Good |
| Gray | Iris root | Root | Iron | Moderate |
Chapter 2: Mordanting
| Mordant | Chemical | Effect | Safety | Source |
|---|---|---|---|---|
| Alum (potassium aluminum sulfate) | KAl(SO4)2 | Brightens colors, fixes dye | Safe | Mineral deposits, pharmacy |
| Iron (ferrous sulfate) | FeSO4 | Darkens/saddens colors | Safe in small amounts | Rusty nails in vinegar (DIY) |
| Copper (copper sulfate) | CuSO4 | Greens and blues | Moderate toxicity | Hardware store |
| Tin (stannous chloride) | SnCl2 | Brightens, especially reds | Toxic | Chemical supply |
| Tannin (tannic acid) | Plant tannins | Pre-mordant for cellulose fibers | Safe | Oak bark, tea, sumac |
| Cream of tartar | Potassium bitartrate | Assists alum, softens fiber | Safe | Kitchen supply |
Mordanting process (alum): Dissolve 15-20% alum (weight of fiber) in hot water. Add wetted fiber. Simmer 1 hour. Cool in bath overnight. Remove, do not rinse. Dye within 1 week.
Chapter 3: Dyeing Process
| Step | Action | Time | Temperature |
|---|---|---|---|
| 1 | Scour fiber/fabric (wash thoroughly) | 1-2 hours | Hot + soap |
| 2 | Mordant (if required) | 1 hour simmer + overnight soak | 180F simmer |
| 3 | Prepare dye bath (extract color from plant material) | 1-2 hours | Simmer (not boil) |
| 4 | Strain dye bath (remove plant material) | 10 min | Hot |
| 5 | Enter mordanted fiber into dye bath | Wet fiber first | Warm |
| 6 | Simmer in dye bath | 1-2 hours | 160-180F (never boil wool) |
| 7 | Cool in bath (deeper color) or remove | 1-24 hours | Cooling |
| 8 | Rinse until water runs clear | 10-20 min | Cool water |
| 9 | Dry in shade | Hours-days | Air dry (sun fades some dyes) |
Chapter 4: Indigo Vat (Special Process)
| Step | Action | Details |
|---|---|---|
| 1 | Extract indigo (or use prepared indigo powder) | Ferment fresh leaves in water 12-24 hours, add alkali, beat to oxidize, settle, collect sediment |
| 2 | Build vat: warm water + alkali + reducing agent | Alkali: wood ash lye or lime. Reducer: overripe fruit, bran, or sodium hydrosulfite |
| 3 | Dissolve indigo in vat | Stir gently, let settle. Liquid should be yellow-green (reduced indigo) |
| 4 | Dip fiber (wet first) into vat | Submerge 1-15 minutes. Fiber appears yellow-green underwater. |
| 5 | Remove and expose to air | Fiber turns blue as indigo oxidizes. Magic moment. |
| 6 | Repeat dips for darker blue | Each dip adds depth. 3-7 dips for medium blue. 10+ for dark. |
| 7 | Rinse thoroughly when desired shade achieved | Cool water |
| 8 | Maintain vat: feed with alkali and reducer | A healthy vat can last months to years |
Indigo is unique: it does not require mordant. It bonds physically (not chemically) to fiber. Works on all fibers equally.
Chapter 5: Fiber-Specific Considerations
| Fiber Type | Mordant Affinity | Special Treatment | Best Dyes |
|---|---|---|---|
| Wool (protein) | Excellent (takes mordant easily) | Never boil (felts). Simmer only. | All natural dyes |
| Silk (protein) | Excellent | Gentle handling, low pH | All natural dyes (brilliant results) |
| Cotton (cellulose) | Poor (needs tannin pre-mordant) | Tannin + alum double mordant | Indigo, madder, tannin-based |
| Linen (cellulose) | Poor | Same as cotton | Indigo, walnut, strong dyes |
| Hemp (cellulose) | Poor | Same as cotton | Indigo, walnut |
Chapter 6: Color Mixing and Modification
| Starting Color | Modifier | Result |
|---|---|---|
| Yellow (weld) | + iron afterbath | Olive green |
| Yellow (weld) | + indigo overdye | Green |
| Red (madder) | + iron afterbath | Brown/maroon |
| Red (madder) | + indigo overdye | Purple |
| Blue (indigo) | + yellow overdye | Green |
| Any color | + iron afterbath | Darker/sadder version |
| Any color | + tin modifier | Brighter version |
| Any color | + alkaline shift | Shifts toward blue/cool |
| Any color | + acid shift | Shifts toward red/warm |
Reference Card
- Mordant before dyeing: alum at 15-20% weight of fiber, simmer 1 hour
- Never boil wool: it felts. Maximum 180F (gentle simmer).
- Indigo needs no mordant: build a vat (alkali + reducer), dip and oxidize
- Iron darkens any color. Tin brightens. Copper shifts toward green.
- Cellulose fibers (cotton, linen) need tannin pre-mordant before alum
- Walnut hulls and indigo need no mordant at all
- Dry dyed goods in shade: direct sun fades many natural dyes
- Overdyeing (blue over yellow = green) creates colors no single dye produces
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