Sepia Mono
Open in tool →A single warm brown from espresso to oat — the sepia scale as a working palette, not a filter.
Color
#37211b
#37211b
hex
#37211brgb
rgb(55, 33, 27)hsl
hsl(13, 34%, 16%)oklch
oklch(0.274 0.036 36)Closest name: Aubergine (#372528)Relative luminance 0.0198
Colors that go with #37211b
Charcoal, Sea Green and Sienna 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 #37211b: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Sea Green #2e8b57
triadicshippedSea Green completes a triad with #37211b — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Sienna #a0522d
analogousshippedSienna is #37211b's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Slate Blue #6a5acd
triadicshippedSlate Blue completes a triad with #37211b — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Steel Blue #4682b4
split-complementshippedSteel Blue is a split-complement of #37211b: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Teal #008080
complementaryshippedTeal sits directly opposite #37211b on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Amber #ffbf00
shippedAmber is paired with #37211b in 15 real palettes, including Maple and Wikipedia's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Blue #0000ff
shippedBlue is paired with #37211b in 22 real palettes, including Burger King's brand system and Tim Hortons's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #37211b
Tints & shades
Harmonies
Contrast
| #37211b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 15.04:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.4:1 | 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 #37211b as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#37211b reads as warm, muted, dark. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #37211b
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 #37211b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/37211b-c4a99c-62cbaf-2d281f-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