Color Harmony Engine — Interior Color Harmony Engine
Provides systematic color theory, palette formulas, and psychological effects for interior design.
Basic Palette Formulas
60-30-10 Rule
60% — Dominant: Walls, ceiling, large furniture
30% — Secondary: Fabric, curtains, rugs, small furniture
10% — Accent: Cushions, accessories, artwork
Example (Scandinavian):
60% White (#FAFAFA)
30% Light Gray (#D5D5D5) + Natural Wood
10% Mustard Yellow (#E8B730)
Color Harmony Types
| Type |
Description |
Feel |
Suitable Spaces |
| Monochromatic |
Value/saturation shifts of a single hue |
Unity, sophistication |
Bedroom, study |
| Analogous |
Adjacent hues (30 degrees on color wheel) |
Natural, comfortable |
Living room, cafe |
| Complementary |
Opposite hues (180 degrees) |
Bold, dynamic |
Accent wall, kids' room |
| Split-complementary |
Adjacent to complement (150 degrees) |
Harmony + energy |
Living room, dining |
| Triadic |
3 hues at 120 degree intervals |
Balanced energy |
Kids' room, playroom |
| Neutral |
Achromatics + natural tones |
Refined, calm |
Minimal spaces |
Interior Style Color Palettes
Scandinavian
Dominant: White #FFFFFF, Off-White #F5F0EB
Secondary: Light Gray #D5D5D5, Natural Oak #C4A574
Accent: Mustard #E8B730, Dusty Pink #D4A5A5, Sage Green #8FA98C
Materials: Solid wood, linen, wool
Modern
Dominant: White #FFFFFF, Cool Gray #9E9E9E
Secondary: Charcoal #333333, Black #1A1A1A
Accent: Electric Blue #2979FF, Red #D32F2F
Materials: Metal, glass, high-gloss
Natural/Organic
Dominant: Ivory #FFFFF0, Beige #F5F0DC
Secondary: Terracotta #C2703E, Olive Green #6B8E23
Accent: Mud Brown #6F4E37, Rust #B7410E
Materials: Rattan, hemp, cotton, earthenware
Mid-Century Modern
Dominant: White #FAFAFA, Warm Wood #A67B5B
Secondary: Teal #008080, Olive #808000
Accent: Orange #FF6D00, Gold #FFD700
Materials: Walnut, leather, velvet
Industrial
Dominant: Concrete Gray #B0B0B0, Dark Gray #4A4A4A
Secondary: Black #1A1A1A, Dark Brown #3E2723
Accent: Orange #E65100, Amber #FFAB00
Materials: Exposed brick, steel, aged wood
Color Psychology — Application by Space
| Color Family |
Psychological Effect |
Suitable Spaces |
Unsuitable Spaces |
| Blue |
Stability, focus, trust |
Study, bedroom, bathroom |
Dining room (suppresses appetite) |
| Green |
Relaxation, nature, balance |
Living room, bedroom, balcony |
- |
| Yellow |
Brightness, energy, creativity |
Kitchen, kids' room, entryway |
Bedroom (overstimulating) |
| Red |
Passion, appetite, energy |
Dining room, accent wall |
Bedroom, study |
| Purple |
Luxury, mystery, creativity |
Bedroom, study |
Kitchen, living room |
| Orange |
Warmth, sociability, energy |
Living room, dining area |
Bedroom |
| Neutral |
Stability, refinement, openness |
All spaces |
- |
Color Strategy by Space Size
Small spaces (<330 sq ft):
- Light-toned dominant color (creates sense of expansion)
- Ceiling color = wall color or lighter
- Minimize accent colors (prevents visual clutter)
- Use mirrors (visual expansion)
Large spaces (>660 sq ft):
- Medium to dark tones are viable (creates coziness)
- Color zoning by area is possible
- Bold accent colors can be used
- Texture variation adds depth
High ceilings:
- Paint ceiling 1-2 shades darker than walls (cozier feel)
Low ceilings:
- Paint ceiling lighter than walls (appears taller)
- Vertical stripe patterns
Color Palette Output Format
## Color Palette
**Style**: [Style Name]
**Harmony type**: [Monochromatic/Analogous/Complementary, etc.]
| Role | Color Name | HEX | Application | Ratio |
|------|-----------|-----|-------------|-------|
| Dominant | Off-White | #F5F0EB | Walls, ceiling | 60% |
| Secondary 1 | Warm Gray | #B8AFA6 | Sofa, curtains | 20% |
| Secondary 2 | Natural Oak | #C4A574 | Table, shelving | 10% |
| Accent | Sage Green | #8FA98C | Cushions, planters | 10% |
References
- Pantone and NCS color system references
- Detailed palette combinations: see
references/color-palettes.md
1---2name: color-harmony-engine3description: A color harmony engine for designing interior color palettes. The 'moodboard-designer' and 'style-analyst' agents must use this skill's color theory, palette formulas, and style-specific palette database when composing color palettes and analyzing styles. Used for 'color palette design', 'color harmony', 'color psychology', etc. Furniture selection and budget management are outside this skill's scope.4---56# Color Harmony Engine — Interior Color Harmony Engine78Provides systematic color theory, palette formulas, and psychological effects for interior design.910## Basic Palette Formulas1112### 60-30-10 Rule1314```1560% — Dominant: Walls, ceiling, large furniture1630% — Secondary: Fabric, curtains, rugs, small furniture1710% — Accent: Cushions, accessories, artwork1819Example (Scandinavian):20 60% White (#FAFAFA)21 30% Light Gray (#D5D5D5) + Natural Wood22 10% Mustard Yellow (#E8B730)23```2425### Color Harmony Types2627| Type | Description | Feel | Suitable Spaces |28|------|-------------|------|-----------------|29| Monochromatic | Value/saturation shifts of a single hue | Unity, sophistication | Bedroom, study |30| Analogous | Adjacent hues (30 degrees on color wheel) | Natural, comfortable | Living room, cafe |31| Complementary | Opposite hues (180 degrees) | Bold, dynamic | Accent wall, kids' room |32| Split-complementary | Adjacent to complement (150 degrees) | Harmony + energy | Living room, dining |33| Triadic | 3 hues at 120 degree intervals | Balanced energy | Kids' room, playroom |34| Neutral | Achromatics + natural tones | Refined, calm | Minimal spaces |3536## Interior Style Color Palettes3738### Scandinavian3940```41Dominant: White #FFFFFF, Off-White #F5F0EB42Secondary: Light Gray #D5D5D5, Natural Oak #C4A57443Accent: Mustard #E8B730, Dusty Pink #D4A5A5, Sage Green #8FA98C44Materials: Solid wood, linen, wool45```4647### Modern4849```50Dominant: White #FFFFFF, Cool Gray #9E9E9E51Secondary: Charcoal #333333, Black #1A1A1A52Accent: Electric Blue #2979FF, Red #D32F2F53Materials: Metal, glass, high-gloss54```5556### Natural/Organic5758```59Dominant: Ivory #FFFFF0, Beige #F5F0DC60Secondary: Terracotta #C2703E, Olive Green #6B8E2361Accent: Mud Brown #6F4E37, Rust #B7410E62Materials: Rattan, hemp, cotton, earthenware63```6465### Mid-Century Modern6667```68Dominant: White #FAFAFA, Warm Wood #A67B5B69Secondary: Teal #008080, Olive #80800070Accent: Orange #FF6D00, Gold #FFD70071Materials: Walnut, leather, velvet72```7374### Industrial7576```77Dominant: Concrete Gray #B0B0B0, Dark Gray #4A4A4A78Secondary: Black #1A1A1A, Dark Brown #3E272379Accent: Orange #E65100, Amber #FFAB0080Materials: Exposed brick, steel, aged wood81```8283## Color Psychology — Application by Space8485| Color Family | Psychological Effect | Suitable Spaces | Unsuitable Spaces |86|-------------|---------------------|-----------------|-------------------|87| Blue | Stability, focus, trust | Study, bedroom, bathroom | Dining room (suppresses appetite) |88| Green | Relaxation, nature, balance | Living room, bedroom, balcony | - |89| Yellow | Brightness, energy, creativity | Kitchen, kids' room, entryway | Bedroom (overstimulating) |90| Red | Passion, appetite, energy | Dining room, accent wall | Bedroom, study |91| Purple | Luxury, mystery, creativity | Bedroom, study | Kitchen, living room |92| Orange | Warmth, sociability, energy | Living room, dining area | Bedroom |93| Neutral | Stability, refinement, openness | All spaces | - |9495## Color Strategy by Space Size9697```98Small spaces (<330 sq ft):99 - Light-toned dominant color (creates sense of expansion)100 - Ceiling color = wall color or lighter101 - Minimize accent colors (prevents visual clutter)102 - Use mirrors (visual expansion)103104Large spaces (>660 sq ft):105 - Medium to dark tones are viable (creates coziness)106 - Color zoning by area is possible107 - Bold accent colors can be used108 - Texture variation adds depth109110High ceilings:111 - Paint ceiling 1-2 shades darker than walls (cozier feel)112113Low ceilings:114 - Paint ceiling lighter than walls (appears taller)115 - Vertical stripe patterns116```117118## Color Palette Output Format119120```markdown121## Color Palette122123**Style**: [Style Name]124**Harmony type**: [Monochromatic/Analogous/Complementary, etc.]125126| Role | Color Name | HEX | Application | Ratio |127|------|-----------|-----|-------------|-------|128| Dominant | Off-White | #F5F0EB | Walls, ceiling | 60% |129| Secondary 1 | Warm Gray | #B8AFA6 | Sofa, curtains | 20% |130| Secondary 2 | Natural Oak | #C4A574 | Table, shelving | 10% |131| Accent | Sage Green | #8FA98C | Cushions, planters | 10% |132```133134## References135136- Pantone and NCS color system references137- Detailed palette combinations: see `references/color-palettes.md`
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