Color

#596ed9

#596ed9
hex#596ed9
rgbrgb(89, 110, 217)
hslhsl(230, 63%, 60%)
oklchoklch(0.577 0.164 272)
Closest name: Royal Blue (#4169e1)Relative luminance 0.1829

Colors that go with #596ed9

Charcoal, Sea Green 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 →

#d9c459

#59aed9 · #8459d9

#d9596e · #6ed959

Split-complementary

Open in tool →

#d98459 · #aed959

#d959ae · #d9c459 · #59d984

Contrast

#596ed9 as textRatioAAAA largeAAAFix
Aaon white
4.51:1passpassfail
  • AAA: use #2e48cc as the text (7.2:1)
Aaon black
4.66:1passpassfail
  • AAA: use #8292e3 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 #596ed9 as the background.

Brands using this color

Fonts for this mood

#596ed9 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #596ed9
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 #596ed9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/596ed9-9c9ec4-df814e-231f2d-e9eef1?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