Color

#3243f5

#3243f5
hex#3243f5
rgbrgb(50, 67, 245)
hslhsl(235, 91%, 58%)
oklchoklch(0.506 0.259 269.1)
Closest name: C64 Blue (#003aff)Relative luminance 0.1128

Colors that go with #3243f5

Charcoal, Crimson and Sea Green 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 →

#f5e532

#32a4f5 · #8432f5

#f53243 · #43f532

Split-complementary

Open in tool →

#f58432 · #a4f532

#f532a4 · #f5e532 · #32f584

Contrast

#3243f5 as textRatioAAAA largeAAAFix
Aaon white
6.45:1passpassfail
  • AAA: use #2435f5 as the text (7.23:1)
Aaon black
3.26:1failpassfail
  • AA: use #5967f7 as the text (4.71:1)
  • AAA: use #858ff9 as the text (7.29:1)
  • AA: or shift the background to #d9d9d9 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3243f5 as the background.

Brands using this color

Fonts for this mood

#3243f5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3243f5
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 #3243f5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3243f5-9e9cc4-df8d4e-241f2d-e9eef1?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