Color

#5a37cd

#5a37cd
hex#5a37cd
rgbrgb(90, 55, 205)
hslhsl(254, 60%, 51%)
oklchoklch(0.477 0.215 285.6)
Closest name: Blurple (#5539cc)Relative luminance 0.0931

Colors that go with #5a37cd

Charcoal, Denim and Sea Green 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 →

#aacd37

#375fcd · #a537cd

#cd5a37 · #37cd5a

Split-complementary

Open in tool →

#cda537 · #5fcd37

#cd375f · #aacd37 · #37cda5

Contrast

#5a37cd as textRatioAAAA largeAAAFix
Aaon white
7.34:1passpasspassPasses AAA — no fix needed.
Aaon black
2.86:1failfailfail
  • AA: use #7c60d7 as the text (4.51:1)
  • AAA: use #9d89e1 as the text (7.1:1)
  • AA: or shift the background to #cccccc (4.57:1)
  • AAA: or shift the background to #fafafa (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5a37cd 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

#5a37cd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5a37cd
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 #5a37cd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5a37cd-aa9cc4-dfbb4e-291f2d-e9ebf1?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