Color

#4537be

#4537be
hex#4537be
rgbrgb(69, 55, 190)
hslhsl(246, 55%, 48%)
oklchoklch(0.445 0.201 279.1)
Closest name: Blurple (#5539cc)Relative luminance 0.0772

Colors that go with #4537be

Charcoal, Sea Green and Steel Blue 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.

Real palettes that use #4537be

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#b0be37

#376dbe · #8837be

#be4537 · #37be45

Split-complementary

Open in tool →

#be8837 · #6dbe37

#be376d · #b0be37 · #37be88

Contrast

#4537be as textRatioAAAA largeAAAFix
Aaon white
8.26:1passpasspassPasses AAA — no fix needed.
Aaon black
2.54:1failfailfail
  • AA: use #7369d3 as the text (4.69:1)
  • AAA: use #958cde as the text (7.08:1)
  • AA: or shift the background to #c2c2c2 (4.64:1)
  • AAA: or shift the background to #ededed (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4537be 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

#4537be reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4537be
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 #4537be and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4537be-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