Color

#4351ea

#4351ea
hex#4351ea
rgbrgb(67, 81, 234)
hslhsl(235, 80%, 59%)
oklchoklch(0.525 0.227 271.7)
Closest name: Arcane Brew (#5260e1)Relative luminance 0.1302

Tints & shades

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

Harmonies

Complementary

Open in tool →

#eadc43

#43a4ea · #8943ea

#ea4351 · #51ea43

Split-complementary

Open in tool →

#ea8943 · #a4ea43

#ea43a4 · #eadc43 · #43ea89

Contrast

#4351ea as textRatioAAAA largeAAAFix
Aaon white
5.83:1passpassfail
  • AAA: use #2c3ce8 as the text (7.2:1)
Aaon black
3.6:1failpassfail
  • AA: use #5a66ed as the text (4.56:1)
  • AAA: use #8891f2 as the text (7.38:1)
  • AA: or shift the background to #e3e3e3 (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4351ea 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

#4351ea reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4351ea
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #4351ea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4351ea-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