Color

#0840f7

#0840f7
hex#0840f7
rgbrgb(8, 64, 247)
hslhsl(226, 94%, 50%)
oklchoklch(0.493 0.271 264.2)
Closest name: C64 Blue (#003aff)Relative luminance 0.1043

Colors that go with #0840f7

Charcoal, Crimson 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 →

#f7bf08

#08b7f7 · #4808f7

#f70840 · #40f708

Split-complementary

Open in tool →

#f74808 · #b7f708

#f708b7 · #f7bf08 · #08f748

Contrast

#0840f7 as textRatioAAAA largeAAAFix
Aaon white
6.8:1passpassfail
  • AAA: use #073ef2 as the text (7.05:1)
Aaon black
3.09:1failpassfail
  • AA: use #3e6af9 as the text (4.63:1)
  • AAA: use #7090fb as the text (7.07:1)
  • AA: or shift the background to #d4d4d4 (4.59:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0840f7 as the background.

Brands using this color

Fonts for this mood

#0840f7 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0840f7
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 #0840f7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0840f7-9ca1c4-df774e-221f2d-e9eff1?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