Color
#669f5b
#669f5brgb(102, 159, 91)hsl(110, 27%, 49%)oklch(0.646 0.115 140.5)Colors that go with #669f5b
Charcoal, Blue 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 body-text near-black for #669f5b: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Blue #0000ff
shipped7 real palettes, including Unity's brand system and Spotify's brand system put Blue beside #669f5b, as the supporting colour.
Copper #b87333
shippedDesigners have shipped Copper with #669f5b: 4 real palettes, including Clean Beauty and Wellness, as the accent.
Crimson #dc143c
shippedCrimson is paired with #669f5b in 5 real palettes, including DuckDuckGo's brand system and Diner, as the supporting colour.
Dark Olive Green #556b2f
shippedDark Olive Green shows up next to #669f5b in 5 real palettes, including Undergrowth and Forest Floor, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #669f5b: 6 real palettes, including Peacock and Intel's brand system, as the supporting colour.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #669f5b: 4 real palettes, including Spline's brand system and Unity's brand system, as the lead colour.
Medium Orchid #ba55d3
complementaryMedium Orchid sits directly opposite #669f5b on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Real palettes that use #669f5b
Tints & shades
Harmonies
Contrast
| #669f5b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.15:1 | fail | pass | fail | |
Aaon black | 6.68:1 | pass | 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 #669f5b as the background.
Brands using this color
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 #669f5b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/669f5b-a3bea2-814edf-1f2d23-eef1e9?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