Sepia Mono
Open in tool →A single warm brown from espresso to oat — the sepia scale as a working palette, not a filter.
Color
#644b3f
#644b3f
hex
#644b3frgb
rgb(100, 75, 63)hsl
hsl(19, 23%, 32%)oklch
oklch(0.436 0.039 46.8)Closest name: Black Power (#654b37)Relative luminance 0.081
Colors that go with #644b3f
Teal, 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.
Teal #008080
complementaryshippedTeal sits directly opposite #644b3f on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Champagne #f7e7ce
shipped4 real palettes, including Darkroom and BrandSweets's brand system put Champagne beside #644b3f, as the surface under it.
Copper #b87333
shippedDesigners have shipped Copper with #644b3f: 6 real palettes, including Bakery and Desert Road, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #644b3f: 4 real palettes, including HP's brand system and Hinge's brand system, as the accent.
Royal Blue #4169e1
shippedRoyal Blue is paired with #644b3f in 4 real palettes, including Console Light and GitHub's brand system, as the lead colour.
Sage Green #9caf88
shippedDesigners have shipped Sage Green with #644b3f: 7 real palettes, including Darkroom and Oatmeal, as the supporting colour.
Steel Blue #4682b4
split-complementshippedSteel Blue is a split-complement of #644b3f: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Cream #fffdd0
neutralCream is the surface #644b3f wants: a warm off-white that shares its undertone, so #644b3f reads softer on it than on pure white.
Real palettes that use #644b3f
Tints & shades
Harmonies
Contrast
| #644b3f as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 8.02:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.62:1 | 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 #644b3f as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Palettes built around it
Fonts for this mood
#644b3f reads as warm, muted, editorial. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #644b3f
live endpointPoint 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.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #644b3f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/644b3f-c4ad9c-62cbb9-2d2a1f-f1e9eb?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