Color

#4080f7

#4080f7
hex#4080f7
rgbrgb(64, 128, 247)
hslhsl(219, 92%, 61%)
oklchoklch(0.621 0.19 261.4)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.2324

Colors that go with #4080f7

Charcoal, Red 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 →

#f7b740

#40dcf7 · #5c40f7

#f74080 · #80f740

Split-complementary

Open in tool →

#f75c40 · #dcf740

#f740dc · #f7b740 · #40f75c

Contrast

#4080f7 as textRatioAAAA largeAAAFix
Aaon white
3.72:1failpassfail
  • AA: use #236df6 as the text (4.58:1)
  • AAA: use #094ece as the text (7.02:1)
  • AA: or shift the background to #1c1c1c (4.58:1)
Aaon black
5.65:1passpassfail
  • AAA: use #5d94f8 as the text (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4080f7 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#4080f7 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4080f7
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 #4080f7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4080f7-9ca5c4-df664e-211f2d-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