Color

#4d31bf

#4d31bf
hex#4d31bf
rgbrgb(77, 49, 191)
hslhsl(252, 59%, 47%)
oklchoklch(0.444 0.207 283.1)
Closest name: Blurple (#5539cc)Relative luminance 0.0754

Colors that go with #4d31bf

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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a2bf31

#315cbf · #9431bf

#bf4d31 · #31bf4d

Split-complementary

Open in tool →

#bf9431 · #5cbf31

#bf315c · #a2bf31 · #31bf94

Contrast

#4d31bf as textRatioAAAA largeAAAFix
Aaon white
8.38:1passpasspassPasses AAA — no fix needed.
Aaon black
2.51:1failfailfail
  • AA: use #7c65d7 as the text (4.7:1)
  • AAA: use #9b89e1 as the text (7.06:1)
  • AA: or shift the background to #bfbfbf (4.55:1)
  • AAA: or shift the background to #ebebeb (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 #4d31bf 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

#4d31bf reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4d31bf
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 #4d31bf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4d31bf-a99cc4-dfb64e-281f2d-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