Color

#481b9d

#481b9d
hex#481b9d
rgbrgb(72, 27, 157)
hslhsl(261, 71%, 36%)
oklchoklch(0.381 0.189 289.8)
Closest name: Galactic Civilization (#442288)Relative luminance 0.046

Colors that go with #481b9d

Royal Blue, Cobalt Blue and Crimson 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 →

#6f9d1b

#1b2e9d · #891b9d

#9d481b · #1b9d48

Split-complementary

Open in tool →

#9d891b · #2e9d1b

#9d1b2e · #6f9d1b · #1b9d89

Contrast

#481b9d as textRatioAAAA largeAAAFix
Aaon white
10.94:1passpasspassPasses AAA — no fix needed.
Aaon black
1.92:1failfailfail
  • AA: use #8959e3 as the text (4.6:1)
  • AAA: use #a885ea as the text (7.21:1)
  • AA: or shift the background to #a8a8a8 (4.6:1)
  • AAA: or shift the background to #cfcfcf (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #481b9d 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

#481b9d reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #481b9d
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 #481b9d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/481b9d-af9cc4-dfcb4e-2a1f2d-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