Color

#405add

#405add
hex#405add
rgbrgb(64, 90, 221)
hslhsl(230, 70%, 56%)
oklchoklch(0.528 0.201 269.6)
Closest name: Arcane Brew (#5260e1)Relative luminance 0.1362

Colors that go with #405add

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 →

#ddc340

#40a9dd · #7540dd

#dd405a · #5add40

Split-complementary

Open in tool →

#dd7540 · #a9dd40

#dd40a9 · #ddc340 · #40dd75

Contrast

#405add as textRatioAAAA largeAAAFix
Aaon white
5.64:1passpassfail
  • AAA: use #2644d9 as the text (7.21:1)
Aaon black
3.72:1failpassfail
  • AA: use #566de1 as the text (4.67:1)
  • AAA: use #8193e9 as the text (7.28:1)
  • AA: or shift the background to #e6e6e6 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #405add as the background.

Brands using this color

Fonts for this mood

#405add reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #405add
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 #405add and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/405add-9c9ec4-df814e-231f2d-e9eef1?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