Color
#666333
#666333rgb(102, 99, 51)hsl(56, 33%, 30%)oklch(0.491 0.068 105.5)Colors that go with #666333
Charcoal, Slate Blue and Champagne lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #666333: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Slate Blue #6a5acd
complementaryshippedSlate Blue sits directly opposite #666333 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Champagne #f7e7ce
shipped6 real palettes, including BrandSweets's brand system and Forest Floor put Champagne beside #666333.
Copper #b87333
shippedDesigners have shipped Copper with #666333: 5 real palettes, including Clay & Linen and Desert Road, as the lead colour.
Crimson #dc143c
shippedCrimson is paired with #666333 in 4 real palettes, including Five Guys's brand system and Netflix's brand system, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #666333: 5 real palettes, including Intel's brand system and Jack Daniel's's brand system, as the supporting colour.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #666333: 4 real palettes, including Fireside and Newsprint, as the lead colour.
Peru #cd853f
shipped4 real palettes, including Coffee Bar and Woodsmoke put Peru beside #666333, as the lead colour.
Real palettes that use #666333
Tints & shades
Harmonies
Contrast
| #666333 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.18:1 | pass | pass | fail |
|
Aaon black | 3.4:1 | fail | pass | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #666333 as the background.
Brands using this color
Fonts for this mood
#666333 reads as warm, muted, dark. The font library is tagged with the same vocabulary:
Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
›analyze #666333 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/666333-bdbea2-4e9edf-282d1f-f1ede9?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md