Color

#407cb5

#407cb5
hex#407cb5
rgbrgb(64, 124, 181)
hslhsl(209, 48%, 48%)
oklchoklch(0.572 0.108 249.2)
Closest name: steelblue (#4682b4)Relative luminance 0.1884

Colors that go with #407cb5

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 →

#b57840

#40b5b3 · #4042b5

#b5407c · #7cb540

Split-complementary

Open in tool →

#b54042 · #b5b340

#b340b5 · #b57840 · #42b540

Contrast

#407cb5 as textRatioAAAA largeAAAFix
Aaon white
4.4:1failpassfail
  • AA: use #3e7ab1 as the text (4.54:1)
  • AAA: use #2e5b84 as the text (7.13:1)
  • AA: or shift the background to #080808 (4.55:1)
Aaon black
4.77:1passpassfail
  • AAA: use #689bca as the text (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #407cb5 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

#407cb5 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #407cb5
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 #407cb5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/407cb5-9cacc4-df4e4e-1f212d-e9f1f1?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