Color
#643a51
#643a51rgb(100, 58, 81)hsl(327, 27%, 31%)oklch(0.407 0.068 346.5)Colors that go with #643a51
Teal, 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.
Teal #008080
complementaryshippedTeal sits directly opposite #643a51 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Copper #b87333
shippedDesigners have shipped Copper with #643a51: 5 real palettes, including Bramble and Notion's brand system, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #643a51 in 5 real palettes, including Dunkin''s brand system and Codecademy's brand system, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #643a51: 5 real palettes, including Hinge's brand system and HP's brand system, as the accent.
Midnight Blue #191970
shipped5 real palettes, including Microsoft's brand system and Tide Pool put Midnight Blue beside #643a51, as the accent.
Powder Blue #b0e0e6
shippedDesigners have shipped Powder Blue with #643a51: 4 real palettes, including Nursery and Stone, as the supporting colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with #643a51 in 6 real palettes, including Console Light and Zoom's brand system, as the lead colour.
Cream #fffdd0
neutralCream is the surface #643a51 wants: a warm off-white that shares its undertone, so #643a51 reads softer on it than on pure white.
Real palettes that use #643a51
Tints & shades
Harmonies
Contrast
| #643a51 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 9.27:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.27:1 | 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 #643a51 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Fonts for this mood
#643a51 reads as warm, muted, editorial. 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 #643a51 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/643a51-c19fae-66cb62-2d1f21-f1e9f1?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