Deliberate Acre amidst Arching: Dominant Wavelength & Spectral Position

The spectral properties of Deliberate Acre amidst Arching (RGB (19-116-236), HSL 213°/85%/50%) connect it to a specific position in the visible electromagnetic spectrum.

Deliberate Acre amidst Arching
#1374EC · RGB (19-116-236) · HSL(213°,85%,50%)

Hue 213° corresponds approximately to 450–490nm (blue) in dominant wavelength. Most perceived colors are non-spectral mixtures, not pure monochromatic light.

Spectral vs. Mixed Colors

Spectral colors are pure monochromatic light at a single wavelength. Most perceived colors — including all screen colors and nearly all surface colors — are multi-wavelength mixtures. A screen mixes R (~630nm), G (~530nm), and B (~460nm) LEDs. The eye perceives the mixture as a unified color through trichromacy.

Color Spaces and the Spectral Locus

The CIE 1931 chromaticity diagram maps all perceptible colors. The horseshoe boundary is the spectral locus — purely monochromatic colors at maximum saturation. Interior points are mixed colors. The sRGB gamut is a triangle within this space bounded by the three primary LED chromaticities.

  • Pure spectral colors appear more vivid than any mixed equivalent at the same hue
  • The spectral locus defines maximum possible saturation for each hue
  • Wide-gamut displays (P3, Rec. 2020) reach closer to the spectral locus

Colors with similar perceptual properties:

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