Color
#666f5d
#666f5drgb(102, 111, 93)hsl(90, 9%, 40%)oklch(0.529 0.03 129.1)Colors that go with #666f5d
Charcoal, 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.
Charcoal #36454f
neutralshippedCharcoal is the text near-black that reads cleanly against #666f5d without the hard edge of pure #000.
Champagne #f7e7ce
shipped6 real palettes, including Forest Floor and BrandSweets's brand system put Champagne beside #666f5d, as that palette's text colour.
Copper #b87333
shippedDesigners have shipped Copper with #666f5d: 7 real palettes, including Riverbed and Clay & Linen, as the accent.
Crimson #dc143c
shippedCrimson is paired with #666f5d in 6 real palettes, including Five Guys's brand system and Netflix's brand system, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #666f5d: 8 real palettes, including Campus and Intel's brand system, as the lead colour.
Goldenrod #daa520
shippedGoldenrod shows up next to #666f5d in 6 real palettes, including Mid-Century and Harvest, as the accent.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #666f5d in 4 real palettes, including Undergrowth and Indigo SaaS, as the lead colour.
Midnight Blue #191970
shipped4 real palettes, including Paramount+'s brand system and Lufthansa's brand system put Midnight Blue beside #666f5d, as the supporting colour.
Real palettes that use #666f5d
Tints & shades
Harmonies
Contrast
| #666f5d as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.25:1 | pass | pass | fail |
|
Aaon black | 4:1 | 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 #666f5d as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Fonts for this mood
#666f5d reads as muted, minimal. 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 #666f5d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/666f5d-adbea2-514edf-202d1f-f1f1e9?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