Sepia Mono
Open in tool →A single warm brown from espresso to oat — the sepia scale as a working palette, not a filter.
Color
#644635rgb(100, 70, 53)hsl(22, 31%, 30%)oklch(0.423 0.049 50.5)Teal, Copper and Denim 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 sits directly opposite #644635 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Designers have shipped Copper with #644635: 5 real palettes, including Bramble and Bakery, as the supporting colour.
Designers have shipped Denim with #644635: 4 real palettes, including HP's brand system and Hinge's brand system, as the accent.
Royal Blue is paired with #644635 in 4 real palettes, including Console Light and GitHub's brand system, as the lead colour.
Designers have shipped Sage Green with #644635: 9 real palettes, including Darkroom and Stone, as the supporting colour.
Designers have shipped Wheat with #644635: 4 real palettes, including Oatmeal and Candlelight, as the accent.
Steel Blue is a split-complement of #644635: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Cream is the surface #644635 wants: a warm off-white that shares its undertone, so #644635 reads softer on it than on pure white.
| #644635 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 8.5:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.47:1 | 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 #644635 as the background.
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
A single warm brown from espresso to oat — the sepia scale as a working palette, not a filter.
#644635 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 #644635 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/644635-c4af9c-62cbbf-2d2a1f-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