Color

#509bce

#509bce
hex#509bce
rgbrgb(80, 155, 206)
hslhsl(204, 56%, 56%)
oklchoklch(0.663 0.107 240.7)
Closest name: Canadian Tuxedo (#579aca)Relative luminance 0.296

Colors that go with #509bce

Charcoal, Peru and Amber 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ce8250

#50cec1 · #505dce

#ce509b · #9bce50

Split-complementary

Open in tool →

#ce505d · #cec150

#c150ce · #ce8250 · #5dce50

Contrast

#509bce as textRatioAAAA largeAAAFix
Aaon white
3.03:1failpassfail
  • AA: use #307aab as the text (4.67:1)
  • AAA: use #245b7f as the text (7.3:1)
  • AA: or shift the background to #2b2b2b (4.67:1)
Aaon black
6.92:1passpassfail
  • AAA: use #549ecf as the text (7.17:1)

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

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

mcpConnect your agent — build around #509bce
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 #509bce and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/509bce-9cafc4-df4e5a-1f222d-e9f1f0?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