Color

#407fdd

#407fdd
hex#407fdd
rgbrgb(64, 127, 221)
hslhsl(216, 70%, 56%)
oklchoklch(0.602 0.157 258.4)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2149

Colors that go with #407fdd

Charcoal, Copper 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 →

#dd9f40

#40cedd · #5040dd

#dd407f · #7fdd40

Split-complementary

Open in tool →

#dd5040 · #cedd40

#dd40ce · #dd9f40 · #40dd50

Contrast

#407fdd as textRatioAAAA largeAAAFix
Aaon white
3.96:1failpassfail
  • AA: use #2f73da as the text (4.58:1)
  • AAA: use #1e56a9 as the text (7.1:1)
  • AA: or shift the background to #171717 (4.52:1)
Aaon black
5.3:1passpassfail

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #407fdd as the background.

Brands using this color

Fonts for this mood

#407fdd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #407fdd
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 #407fdd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/407fdd-9ca7c4-df5f4e-201f2d-e9f0f1?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