Color

#587af3

#587af3
hex#587af3
rgbrgb(88, 122, 243)
hslhsl(227, 87%, 65%)
oklchoklch(0.617 0.185 268.7)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.2246

Colors that go with #587af3

Charcoal, Red 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 →

#f3d258

#58c7f3 · #8458f3

#f3587a · #7af358

Split-complementary

Open in tool →

#f38458 · #c7f358

#f358c7 · #f3d258 · #58f384

Contrast

#587af3 as textRatioAAAA largeAAAFix
Aaon white
3.82:1failpassfail
  • AA: use #456bf2 as the text (4.53:1)
  • AAA: use #103fea as the text (7.19:1)
  • AA: or shift the background to #1a1a1a (4.55:1)
Aaon black
5.49:1passpassfail
  • AAA: use #7591f5 as the text (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #587af3 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

#587af3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #587af3
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 #587af3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/587af3-9ca0c4-df7a4e-221f2d-e9eff1?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