Color

#4840dd

#4840dd
hex#4840dd
rgbrgb(72, 64, 221)
hslhsl(243, 70%, 56%)
oklchoklch(0.49 0.228 276.1)
Closest name: Blurple (#5539cc)Relative luminance 0.1026

Colors that go with #4840dd

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.

Real palettes that use #4840dd

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d5dd40

#4087dd · #9740dd

#dd4840 · #40dd48

Split-complementary

Open in tool →

#dd9740 · #87dd40

#dd4087 · #d5dd40 · #40dd97

Contrast

#4840dd as textRatioAAAA largeAAAFix
Aaon white
6.88:1passpassfail
  • AAA: use #443cdd as the text (7.15:1)
Aaon black
3.05:1failpassfail
  • AA: use #6e67e4 as the text (4.72:1)
  • AAA: use #938eeb as the text (7.31:1)
  • AA: or shift the background to #d1d1d1 (4.5:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4840dd 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

#4840dd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4840dd
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 #4840dd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4840dd-a39cc4-dfa04e-261f2d-e9edf1?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