Color

#596bde

#596bde
hex#596bde
rgbrgb(89, 107, 222)
hslhsl(232, 67%, 61%)
oklchoklch(0.574 0.175 273)
Closest name: Royal Blue (#4169e1)Relative luminance 0.1791

Colors that go with #596bde

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 →

#decc59

#59adde · #8a59de

#de596b · #6bde59

Split-complementary

Open in tool →

#de8a59 · #adde59

#de59ad · #decc59 · #59de8a

Contrast

#596bde as textRatioAAAA largeAAAFix
Aaon white
4.58:1passpassfail
  • AAA: use #2e45d6 as the text (7.15:1)
Aaon black
4.58:1passpassfail
  • AAA: use #8491e7 as the text (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #596bde as the background.

Brands using this color

Fonts for this mood

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

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

tool url/palettes/new/596bde-9c9dc4-df864e-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