Color
#509f9f
#509f9frgb(80, 159, 159)hsl(180, 33%, 47%)oklch(0.653 0.078 195.4)Colors that go with #509f9f
Charcoal, Blush Pink 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 for #509f9f: softer than #000 and cool enough to feel like part of the same palette.
Blush Pink #e8b4b8
shipped4 real palettes, including Rain Garden and Estate put Blush Pink beside #509f9f, as the accent.
Copper #b87333
shippedDesigners have shipped Copper with #509f9f: 6 real palettes, including Clean Beauty and Dusk, as the accent.
Crimson #dc143c
shippedCrimson is paired with #509f9f in 5 real palettes, including Diner and Redfin's brand system, as the lead colour.
Dark Olive Green #556b2f
shippedDark Olive Green shows up next to #509f9f in 4 real palettes, including Oatmeal and Clay & Linen, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #509f9f: 5 real palettes, including Peacock and Dusk, as the supporting colour.
Midnight Blue #191970
shipped8 real palettes, including Ford's brand system and Tide Pool put Midnight Blue beside #509f9f, as the lead colour.
Indian Red #cd5c5c
complementaryIndian Red sits directly opposite #509f9f 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 #509f9f
Tints & shades
Harmonies
Contrast
| #509f9f as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.09:1 | fail | pass | fail | |
Aaon black | 6.8:1 | 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 #509f9f 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 #509f9f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/509f9f-a2bbbe-d45994-1f272d-e9f1ed?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