Color
#643a1b
#643a1brgb(100, 58, 27)hsl(25, 57%, 25%)oklch(0.393 0.074 54.9)Colors that go with #643a1b
Blue, Copper and Crimson 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.
Blue #0000ff
shipped4 real palettes, including Dunkin''s brand system and Minecraft's brand system put Blue beside #643a1b, as the supporting colour.
Copper #b87333
shippedDesigners have shipped Copper with #643a1b: 4 real palettes, including Bramble and Notion's brand system, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #643a1b in 4 real palettes, including M&M's's brand system and Burger King's brand system, as the supporting colour.
Hunter Green #355e3b
shippedHunter Green is paired with #643a1b in 4 real palettes, including Bookshop and Darkroom, as the accent.
Sage Green #9caf88
shippedDesigners have shipped Sage Green with #643a1b: 8 real palettes, including Stone and Darkroom, as the supporting colour.
Steel Blue #4682b4
complementarySteel Blue sits directly opposite #643a1b on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Royal Blue #4169e1
split-complementshippedRoyal Blue is a split-complement of #643a1b: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #643a1b: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Real palettes that use #643a1b
Tints & shades
Harmonies
Contrast
| #643a1b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 9.71:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.16:1 | fail | fail | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #643a1b as the background.
Brands using this color
Fonts for this mood
#643a1b 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 #643a1b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/643a1b-c4b19c-62cbc4-2d2b1f-f1e9ea?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