Contemplative Acre among the Rooting: Metamerism: Why This Color Shifts Under Different Lights

The appearance of Contemplative Acre among the Rooting (RGB (184-146-122), HSL 23°/30%/60%) may shift under different light sources — a phenomenon called metamerism.

Contemplative Acre among the Rooting
#B8927A · RGB (184-146-122) · HSL(23°,30%,60%)

The RGB values (184,146,122) define a specific spectral reflectance pattern that determines how much this color shifts under different illuminants.

What is Metamerism?

Two colors are metameric if they appear identical under one illuminant but different under another. This occurs because the eye has only three cone types — it can be fooled by different spectral compositions that produce the same L:M:S response under one light but different responses under another.

Practical Impact

Metamerism affects fashion (garments matching under store fluorescents but clashing in daylight), automotive paint (panels painted separately), and cosmetics (foundation color under shop vs. natural light).

  • Always check color matches under multiple light sources before approval
  • Use a spectrophotometer for critical matching — visual assessment is insufficient
  • D65 (6500K) is the standard reference illuminant for metamerism testing
  • High-metamerism-index colors show the most dramatic shifts across illuminants

Colors with similar perceptual properties:

Explore with PIGMENTUM

PIGMENTUM shows a Metamerism Index on each color page.

Full data for Contemplative Acre among the Rooting → 🎨 View Color Data →