Color

#5125ef

#5125ef
hex#5125ef
rgbrgb(81, 37, 239)
hslhsl(253, 86%, 54%)
oklchoklch(0.485 0.268 279.5)
Closest name: Meteor Shower (#5533ff)Relative luminance 0.093

Colors that go with #5125ef

Charcoal, Cobalt Blue and Cornflower Blue 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 →

#c3ef25

#255eef · #b525ef

#ef5125 · #25ef51

Split-complementary

Open in tool →

#efb525 · #5eef25

#ef255e · #c3ef25 · #25efb5

Contrast

#5125ef as textRatioAAAA largeAAAFix
Aaon white
7.34:1passpasspassPasses AAA — no fix needed.
Aaon black
2.86:1failfailfail
  • AA: use #7a59f3 as the text (4.55:1)
  • AAA: use #9c84f6 as the text (7.04:1)
  • AA: or shift the background to #cccccc (4.57:1)
  • AAA: or shift the background to #fafafa (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5125ef as the background.

Brands using this color

Fonts for this mood

#5125ef reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5125ef
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 #5125ef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5125ef-a99cc4-dfb84e-281f2d-e9ebf1?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