Color
#645b2b
#645b2brgb(100, 91, 43)hsl(51, 40%, 28%)oklch(0.469 0.068 98.9)Colors that go with #645b2b
Charcoal, Champagne and Copper 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 #645b2b: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Champagne #f7e7ce
shipped6 real palettes, including BrandSweets's brand system and Darkroom put Champagne beside #645b2b.
Copper #b87333
shippedDesigners have shipped Copper with #645b2b: 5 real palettes, including Clay & Linen and Desert Road, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #645b2b: 5 real palettes, including Intel's brand system and Jack Daniel's's brand system, as the supporting colour.
Peru #cd853f
shipped5 real palettes, including Bakery and Coffee Bar put Peru beside #645b2b, as the supporting colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with #645b2b in 4 real palettes, including Subaru's brand system and Console Light, as the supporting colour.
Rust #b7410e
shippedRust shows up next to #645b2b in 5 real palettes, including Magazine Ochre and Harvest, as the lead colour.
Slate Blue #6a5acd
complementarySlate Blue sits directly opposite #645b2b on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Real palettes that use #645b2b
Tints & shades
Harmonies
Contrast
| #645b2b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.83:1 | pass | pass | fail |
|
Aaon black | 3.07:1 | 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 #645b2b as the background.
Brands using this color
Fonts for this mood
#645b2b reads as warm, dark, luxury. 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 #645b2b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/645b2b-c4c29c-4eaadf-292d1f-f1ece9?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