Undergrowth
Open in tool →Fern and lichen with a fungus orange on a fir-black — the forest floor at dusk, as a dark theme.
Color
#66634d
#66634d
hex
#66634drgb
rgb(102, 99, 77)hsl
hsl(53, 14%, 35%)oklch
oklch(0.496 0.034 101.1)Closest name: Black Forest (#5e6354)Relative luminance 0.1228
Colors that go with #66634d
Charcoal, Slate Blue and Champagne 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 #66634d: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Slate Blue #6a5acd
complementaryshippedSlate Blue sits directly opposite #66634d on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Champagne #f7e7ce
shipped6 real palettes, including BrandSweets's brand system and Coffee Bar put Champagne beside #66634d.
Copper #b87333
shippedDesigners have shipped Copper with #66634d: 6 real palettes, including Clay & Linen and Desert Road, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #66634d: 7 real palettes, including Campus and HP's brand system, as the lead colour.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #66634d: 4 real palettes, including Newsprint and Fireside, as the lead colour.
Goldenrod #daa520
shippedGoldenrod shows up next to #66634d in 5 real palettes, including Harvest and Fireside, as the accent.
Peru #cd853f
shipped4 real palettes, including Coffee Bar and Woodsmoke put Peru beside #66634d, as the lead colour.
Real palettes that use #66634d
Tints & shades
Harmonies
Contrast
| #66634d as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.07:1 | pass | pass | fail |
|
Aaon black | 3.46:1 | fail | pass | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #66634d as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#66634d reads as warm, muted, editorial. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #66634d
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 #66634d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/66634d-c4c49c-4ea5df-292d1f-f1ece9?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