Color

#409cb5

#409cb5
hex#409cb5
rgbrgb(64, 156, 181)
hslhsl(193, 48%, 48%)
oklchoklch(0.648 0.093 218.9)
Closest name: Blue Ocean (#009dc4)Relative luminance 0.282

Colors that go with #409cb5

Charcoal, Amber and Cobalt 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.

Real palettes that use #409cb5

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b55940

#40b594 · #4061b5

#b5409c · #9cb540

Split-complementary

Open in tool →

#b54061 · #b59440

#9440b5 · #b55940 · #61b540

Contrast

#409cb5 as textRatioAAAA largeAAAFix
Aaon white
3.16:1failpassfail
  • AA: use #347f93 as the text (4.56:1)
  • AAA: use #265e6d as the text (7.23:1)
  • AA: or shift the background to #292929 (4.6:1)
Aaon black
6.64:1passpassfail
  • AAA: use #42a2bd 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 #409cb5 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

#409cb5 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #409cb5
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 #409cb5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/409cb5-a2b5be-df4e75-1f242d-e9f1ef?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