Color

#559bf6

#559bf6
hex#559bf6
rgbrgb(85, 155, 246)
hslhsl(214, 90%, 65%)
oklchoklch(0.685 0.152 255.8)
Closest name: cornflowerblue (#6495ed)Relative luminance 0.3203

Colors that go with #559bf6

Charcoal, Tomato and Peru 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 →

#f6b055

#55ebf6 · #6055f6

#f6559b · #9bf655

Split-complementary

Open in tool →

#f66055 · #ebf655

#f655eb · #f6b055 · #55f660

Contrast

#559bf6 as textRatioAAAA largeAAAFix
Aaon white
2.84:1failfailfail
  • AA: use #0d70f2 as the text (4.55:1)
  • AAA: use #0953b3 as the text (7.24:1)
  • AA: or shift the background to #303030 (4.65:1)
  • AAA: or shift the background to #080808 (7.06:1)
Aaon black
7.41:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #559bf6 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

#559bf6 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #559bf6
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 #559bf6 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/559bf6-9ca9c4-df5a4e-1f1f2d-e9f0f1?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