Color
#540d21
#540d21rgb(84, 13, 33)hsl(343, 73%, 19%)oklch(0.297 0.102 10.1)Colors that go with #540d21
Charcoal, Sea Green and Steel Blue 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 #540d21: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Sea Green #2e8b57
split-complementshippedSea Green is a split-complement of #540d21: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Steel Blue #4682b4
triadicshippedSteel Blue completes a triad with #540d21 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Teal #008080
complementaryshippedTeal sits directly opposite #540d21 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 #540d21 in 4 real palettes, including McDonald's's brand system and Maple, as the lead colour.
Blue #0000ff
shipped8 real palettes, including Tim Hortons's brand system and Dunkin''s brand system put Blue beside #540d21, as the accent.
Blush Pink #e8b4b8
shipped4 real palettes, including Blush and Graphite Mono put Blush Pink beside #540d21, as the supporting colour.
Champagne #f7e7ce
shipped5 real palettes, including Bramble and Darkroom put Champagne beside #540d21, as the text colour against it.
Real palettes that use #540d21
Tints & shades
Harmonies
Contrast
| #540d21 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 14.42:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.46:1 | 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 #540d21 as the background.
Brands using this color
Fonts for this mood
#540d21 reads as warm, vivid, 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 #540d21 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/540d21-c49ca3-62cb7b-2d211f-f1e9ef?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