Project Atlas: Perceptual Color Genome

Purpose

This document defines the initial research direction for the Perceptual Color Genome, a foundational component of Project Atlas. The objective is not to catalog colors or palettes, but to understand the underlying biological, psychological, and physical mechanisms that determine how humans perceive and respond to color.

The long-term goal is to develop evidence-based laws of color that apply across user interface design, graphic design, architecture, industrial design, photography, film, and traditional art.

Core Philosophy

Traditional color theory describes relationships between colors.

Project Atlas aims to explain why those relationships exist.

Rather than asking:

• Which colors work together?

We ask:

• Why do humans perceive those colors the way they do?
• Which aspects of perception are biological?
• Which are learned?
• Which can be measured?
• Which remain constant across disciplines?

The goal is prediction rather than memorization.

The Perceptual Color Genome

Color
├── Perception
├── Attention
├── Emotion
├── Meaning
├── Structure
├── Contrast
├── Light
├── Context
├── Material
└── Time

Each branch represents an independent dimension of color that interacts with the others.

1. Perception

Purpose

Understand the biological mechanisms of color vision.

Research Questions

• Why do some colors appear brighter than others?
• Why do complementary colors vibrate?
• Why do afterimages occur?
• Why do gradients band?
• Why do some colors appear to advance while others recede?

Research Areas

• Cone response curves
• Opponent process theory
• Color constancy
• Visual adaptation
• Simultaneous contrast
• Human spatial frequency sensitivity
• Perceptual color spaces

2. Attention

Purpose

Determine how color directs visual attention.

Research Questions

• Which color properties attract the eye?
• How much contrast is required before something becomes noticeable?
• How many competing attention signals can coexist?
• When does emphasis become visual noise?

Applications

• Call-to-action buttons
• Alerts
• Notifications
• Warnings
• Dashboards

3. Emotion

Purpose

Understand emotional responses to color.

Variables

• Hue
• Saturation
• Brightness
• Context
• Lighting
• Texture
• Scale
• Composition
• Culture

Working hypothesis:

Emotion is produced by combinations of variables rather than hue alone.

4. Meaning

Purpose

Study semantic meaning carried by color.

Examples include:

• Safety
• Danger
• Trust
• Nature
• Luxury
• Technology
• Health
• Authority

Questions include:

• Which meanings appear universal?
• Which are cultural?
• How do meanings evolve over time?

5. Structure

Purpose

Understand how color creates organization.

Functions include:

• Grouping
• Separation
• Hierarchy
• Depth
• Navigation
• Relationship mapping

Good interfaces often use color structurally more than decoratively.

6. Contrast

Contrast is multidimensional.

Research includes:

• Hue contrast
• Value contrast
• Saturation contrast
• Temperature contrast
• Simultaneous contrast
• Local contrast
• Global contrast

7. Light

Color is inseparable from light.

Study how perception changes under:

• Sunlight
• Cloud cover
• Golden hour
• Incandescent lighting
• LED lighting
• OLED displays
• Printed media

8. Context

No color exists independently.

Research includes:

• Simultaneous contrast
• Figure-ground perception
• Adjacent color influence
• Relative luminance
• Perceptual illusions

Hypothesis:

Context often influences perceived color more than numerical RGB values.

9. Material

Study how physical materials influence perceived color.

Examples:

• Paper
• Glass
• Wood
• Fabric
• Plastic
• Metal
• Ceramic
• Concrete
• Skin

Surface finish, reflectance, and texture may influence perception as much as pigment.

10. Time

Color changes over time.

Research includes:

• Adaptation
• Animation
• Dark mode
• Circadian effects
• Memory
• Seasonal expectations

Atlas Relationship Map

Color
├── Typography
│     ├── Readability
│     ├── Emphasis
│     └── Hierarchy
│
├── Layout
│     ├── Grouping
│     ├── Spacing perception
│     └── Balance
│
├── Motion
│     ├── Attention
│     ├── Animation
│     └── Change detection
│
├── Shape
│     ├── Figure-ground
│     ├── Affordance
│     └── Silhouette
│
├── Lighting
├── Material
└── Emotion

Research Sources

The Color Genome should synthesize findings from:

• Vision neuroscience
• Gestalt psychology
• Color science (Munsell, CIE, CIELAB, CAM16, OKLab, OKLCH)
• Psychophysics
• Accessibility research (WCAG, APCA)
• Human factors
• UI design systems
• Printing and pigment science
• Photography
• Cinematography
• Classical painting
• Modern graphic design
• Brand identity research
• Data visualization research

Initial Hypotheses

1. Luminance carries hierarchy more strongly than hue.
2. Perceptual differences matter more than numerical RGB differences.
3. Saturation increases attention until competing signals create overload.
4. Context changes perceived color more than absolute values.
5. Learned meaning amplifies or suppresses biological salience.
6. Color is most effective when considered alongside typography, spacing, shape, motion, and composition.

These are hypotheses to test through evidence rather than assumptions.

Long-Term Vision

The Perceptual Color Genome will become one of the core knowledge graphs within Project Atlas.

Rather than documenting aesthetic preferences, it will model measurable relationships among perception, cognition, composition, semantics, and interaction.

The ultimate objective is to develop a predictive model capable of explaining why certain color decisions consistently succeed across disciplines, enabling designers to make evidence-based decisions instead of relying solely on intuition.