Color

#5102ac

#5102ac
hex#5102ac
rgbrgb(81, 2, 172)
hslhsl(268, 98%, 34%)
oklchoklch(0.392 0.217 292.3)
Closest name: Intergalactic Settlement (#5b1e8b)Relative luminance 0.0477

Colors that go with #5102ac

Royal Blue, Cobalt Blue and Olive 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 →

#5cac02

#0207ac · #a602ac

#ac5102 · #02ac51

Split-complementary

Open in tool →

#aca602 · #07ac02

#ac0207 · #5cac02 · #02aca6

Contrast

#5102ac as textRatioAAAA largeAAAFix
Aaon white
10.75:1passpasspassPasses AAA — no fix needed.
Aaon black
1.95:1failfailfail
  • AA: use #9a44fd as the text (4.62:1)
  • AAA: use #b677fe as the text (7.06:1)
  • AA: or shift the background to #a8a8a8 (4.52:1)
  • AAA: or shift the background to #d1d1d1 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5102ac 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

#5102ac reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5102ac
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 #5102ac and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5102ac-b39cc4-dfdc4e-2c1f2d-e9eaf1?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