Color

#5108e2

#5108e2
hex#5108e2
rgbrgb(81, 8, 226)
hslhsl(260, 93%, 46%)
oklchoklch(0.455 0.267 282.1)
Closest name: Overdue Blue (#4400ff)Relative luminance 0.0741

Colors that go with #5108e2

Charcoal, Denim and Cobalt 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 →

#9ae208

#082de2 · #be08e2

#e25108 · #08e251

Split-complementary

Open in tool →

#e2be08 · #2de208

#e2082d · #9ae208 · #08e2be

Contrast

#5108e2 as textRatioAAAA largeAAAFix
Aaon white
8.46:1passpasspassPasses AAA — no fix needed.
Aaon black
2.48:1failfailfail
  • AA: use #8a53f9 as the text (4.69:1)
  • AAA: use #a87ffa as the text (7.08:1)
  • AA: or shift the background to #bdbdbd (4.5:1)
  • AAA: or shift the background to #ebebeb (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5108e2 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

#5108e2 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5108e2
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 #5108e2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5108e2-ae9cc4-dfc94e-2a1f2d-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