Color Conversion

The Color Conversion tool converts beer color measurements between SRM, EBC, and Lovibond scales.

How to Use

  1. Enter a value in any color unit field

  2. View instant conversions - All other units update automatically

  3. Visual color preview shows approximate beer color

  4. The tool remembers your last entered value

Beer Color Scales

SRM (Standard Reference Method)

  • Used primarily in North America

  • Range: 1-40+ for most beers

  • Based on light absorbance at 430nm

EBC (European Brewery Convention)

  • Used in Europe and many other regions

  • Range: 2-80+ for most beers

  • EBC ≈ SRM × 1.97

Lovibond

  • Older system, still used for malt

  • Visual comparison method

  • Similar scale to SRM

Color Ranges by Style

Light Beers (2-6 SRM)

  • Pilsner: 2-4 SRM

  • Light Lager: 2-3 SRM

  • Wheat Beer: 3-6 SRM

  • Blonde Ale: 3-6 SRM

Amber Beers (6-15 SRM)

  • Pale Ale: 5-10 SRM

  • IPA: 6-14 SRM

  • Amber Ale: 10-17 SRM

  • Märzen: 8-17 SRM

Dark Beers (15-40+ SRM)

  • Brown Ale: 18-35 SRM

  • Porter: 20-30 SRM

  • Stout: 30-40+ SRM

  • Imperial Stout: 30-40+ SRM

Factors Affecting Beer Color

Ingredients

  • Base Malts: 1.5-4 L

  • Crystal Malts: 10-120 L

  • Roasted Malts: 300-600 L

  • Specialty Malts: Wide range

Process Variables

  • Boil Time: Longer = darker

  • pH: Higher = darker

  • Oxidation: Darkens over time

  • Caramelization: From kettle heat

Measuring Beer Color

Laboratory Method

  • Spectrophotometer at 430nm

  • 1cm path length

  • Dilute if needed

  • Most accurate method

Visual Comparison

  • Compare to color charts

  • Use proper lighting

  • White background

  • Less accurate but practical

Digital Tools

  • Phone apps available

  • Photo analysis

  • Reasonable estimates

  • Convenient for homebrewers

Practical Applications

Recipe Design

  • Target specific color

  • Balance malt bill

  • Predict final appearance

  • Match style guidelines

Quality Control

  • Monitor batch consistency

  • Track color changes

  • Identify process issues

  • Compare to standards

Competition

  • Meet style requirements

  • Judge expectations

  • Visual appeal

  • Score optimization

Color Perception

Lighting Effects

  • Daylight: Most accurate

  • Incandescent: Appears redder

  • Fluorescent: May shift hue

  • LED: Varies by type

Glass and Volume

  • Appears lighter in thin layers

  • Darker in full pint glass

  • Sample in consistent vessel

  • Standard is 1cm path

Tips for Color Control

  1. Accurate Measurements: Weigh malts precisely

  2. Fresh Ingredients: Old malt may darken

  3. pH Control: Monitor and adjust

  4. Consistent Process: Same boil time/vigor

  5. Avoid Oxidation: Minimize post-fermentation

Troubleshooting

Darker than Expected

  • Check boil time and pH

  • Avoid scorching

Lighter than Expected

  • Verify extraction efficiency

  • Check malt specifications

Using with Recipe Design

  • Convert between scales when following recipes

  • Check if your beer color matches style guidelines

  • The tool remembers your last entered values

  • Use for consistent color targeting across batches

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