Sepia Mono
Open in tool →A single warm brown from espresso to oat — the sepia scale as a working palette, not a filter.
Color
#37221f
#37221f
hex
#37221frgb
rgb(55, 34, 31)hsl
hsl(8, 28%, 17%)oklch
oklch(0.278 0.033 28.3)Closest name: Aubergine (#372528)Relative luminance 0.0206
Colors that go with #37221f
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 #37221f: 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 #37221f — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Sienna #a0522d
analogousshippedSienna is #37221f's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Steel Blue #4682b4
split-complementshippedSteel Blue is a split-complement of #37221f: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Teal #008080
complementaryshippedTeal sits directly opposite #37221f 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 #37221f in 18 real palettes, including McDonald's's brand system and Wikipedia's brand system, as the lead colour.
Blue #0000ff
shipped23 real palettes, including Tim Hortons's brand system and Headspace's brand system put Blue beside #37221f, as the accent.
Blue Violet #8a2be2
shippedBlue Violet is paired with #37221f in 7 real palettes, including ClickUp's brand system and Yahoo's brand system, as the lead colour.
Real palettes that use #37221f
Tints & shades
Harmonies
Contrast
| #37221f as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 14.88:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.41:1 | 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 #37221f as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#37221f reads as warm, muted, dark. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #37221f
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 #37221f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/37221f-c4a69c-62cba6-2d271f-f1e9ec?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