Color

#409fe2

#409fe2
hex#409fe2
rgbrgb(64, 159, 226)
hslhsl(205, 74%, 57%)
oklchoklch(0.676 0.133 243.2)
Closest name: Blue Bay (#619ad6)Relative luminance 0.3138

Colors that go with #409fe2

Charcoal, Peru and Midnight 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 #409fe2

Tints & shades

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

Harmonies

Complementary

Open in tool →

#e28440

#40e2d5 · #404ee2

#e2409f · #9fe240

Split-complementary

Open in tool →

#e2404e · #e2d540

#d540e2 · #e28440 · #4ee240

Contrast

#409fe2 as textRatioAAAA largeAAAFix
Aaon white
2.89:1failfailfail
  • AA: use #1d7bbf as the text (4.53:1)
  • AAA: use #155c8e as the text (7.11:1)
  • AA: or shift the background to #303030 (4.57:1)
  • AAA: or shift the background to #050505 (7.06:1)
Aaon black
7.28:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #409fe2 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

#409fe2 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #409fe2
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 #409fe2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/409fe2-9cafc4-df4e58-1f212d-e9f1f0?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