Color
#509f6f
#509f6frgb(80, 159, 111)hsl(144, 33%, 47%)oklch(0.639 0.107 155.1)Colors that go with #509f6f
Charcoal, Copper and Cornflower 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 text near-black for #509f6f: softer than #000 and cool enough to feel like part of the same palette.
Copper #b87333
shippedDesigners have shipped Copper with #509f6f: 5 real palettes, including Clean Beauty and Wellness, as the accent.
Cornflower Blue #6495ed
triadicshippedCornflower Blue completes a triad with #509f6f — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Crimson #dc143c
shippedCrimson is paired with #509f6f in 5 real palettes, including Diner and DuckDuckGo's brand system, as the lead colour.
Dark Olive Green #556b2f
shippedDark Olive Green shows up next to #509f6f in 4 real palettes, including Undergrowth and Forest Floor, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #509f6f: 5 real palettes, including Peacock and Intel's brand system, as the supporting colour.
Midnight Blue #191970
shipped5 real palettes, including Fintech Trust and Tide Pool put Midnight Blue beside #509f6f, as the text colour against it.
Royal Blue #4169e1
shippedRoyal Blue is paired with #509f6f in 6 real palettes, including Console Light and Telehealth, as the lead colour.
Real palettes that use #509f6f
Tints & shades
Harmonies
Contrast
| #509f6f as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.22:1 | fail | pass | fail | |
Aaon black | 6.53:1 | 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 #509f6f as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
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 #509f6f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/509f6f-a2beb0-ca59d4-1f2d2b-eaf1e9?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