Color

#509da5

#509da5
hex#509da5
rgbrgb(80, 157, 165)
hslhsl(186, 35%, 48%)
oklchoklch(0.65 0.077 204.4)
Closest name: Atlas Cedar (#5ca0a7)Relative luminance 0.2854

Colors that go with #509da5

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.

Real palettes that use #509da5

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#a55850

#50a583 · #5072a5

#a5509d · #9da550

Split-complementary

Open in tool →

#a55072 · #a58350

#8350a5 · #a55850 · #72a550

Contrast

#509da5 as textRatioAAAA largeAAAFix
Aaon white
3.13:1failpassfail
  • AA: use #417f86 as the text (4.56:1)
  • AAA: use #305f64 as the text (7.13:1)
  • AA: or shift the background to #2b2b2b (4.52:1)
Aaon black
6.71:1passpassfail
  • AAA: use #53a3ac as the text (7.2:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #509da5 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

#509da5 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #509da5
live endpoint

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.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #509da5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/509da5-a2b8be-df4e86-1f262d-e9f1ee?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md