Color

#3455ea

#3455ea
hex#3455ea
rgbrgb(52, 85, 234)
hslhsl(229, 81%, 56%)
oklchoklch(0.525 0.227 267.7)
Closest name: Arcane Brew (#5260e1)Relative luminance 0.1317

Colors that go with #3455ea

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 →

#eac834

#34b0ea · #6d34ea

#ea3455 · #55ea34

Split-complementary

Open in tool →

#ea6d34 · #b0ea34

#ea34b0 · #eac834 · #34ea6d

Contrast

#3455ea as textRatioAAAA largeAAAFix
Aaon white
5.78:1passpassfail
  • AAA: use #1d42e7 as the text (7.03:1)
Aaon black
3.63:1failpassfail
  • AA: use #4b69ec as the text (4.53:1)
  • AAA: use #798ff1 as the text (7.01:1)
  • AA: or shift the background to #e3e3e3 (4.5:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3455ea as the background.

Brands using this color

Fonts for this mood

#3455ea reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3455ea
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 #3455ea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3455ea-9c9fc4-df7e4e-231f2d-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