Color

#584eb7

#584eb7
hex#584eb7
rgbrgb(88, 78, 183)
hslhsl(246, 42%, 51%)
oklchoklch(0.492 0.16 283.1)
Closest name: slateblue (#6a5acd)Relative luminance 0.1094

Colors that go with #584eb7

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 →

#acb74e

#4e78b7 · #8d4eb7

#b7584e · #4eb758

Split-complementary

Open in tool →

#b78d4e · #78b74e

#b74e78 · #acb74e · #4eb78d

Contrast

#584eb7 as textRatioAAAA largeAAAFix
Aaon white
6.59:1passpassfail
  • AAA: use #5348b1 as the text (7.17:1)
Aaon black
3.19:1failpassfail
  • AA: use #736bc2 as the text (4.61:1)
  • AAA: use #958fd1 as the text (7.13:1)
  • AA: or shift the background to #d6d6d6 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #584eb7 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

#584eb7 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #584eb7
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 #584eb7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/584eb7-a59cc4-dfa74e-271f2d-e9ecf1?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