Color

#4158ec

#4158ec
hex#4158ec
rgbrgb(65, 88, 236)
hslhsl(232, 82%, 59%)
oklchoklch(0.537 0.222 270.1)
Closest name: Arcane Brew (#5260e1)Relative luminance 0.1416

Colors that go with #4158ec

Charcoal, Sea Green 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 →

#ecd541

#41adec · #8041ec

#ec4158 · #58ec41

Split-complementary

Open in tool →

#ec8041 · #adec41

#ec41ad · #ecd541 · #41ec80

Contrast

#4158ec as textRatioAAAA largeAAAFix
Aaon white
5.48:1passpassfail
  • AAA: use #253fe9 as the text (7.08:1)
Aaon black
3.83:1failpassfail
  • AA: use #5368ee as the text (4.58:1)
  • AAA: use #8291f3 as the text (7.29:1)
  • AA: or shift the background to #ebebeb (4.6:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4158ec as the background.

Brands using this color

Fonts for this mood

#4158ec reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4158ec
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 #4158ec and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4158ec-9c9dc4-df864e-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