Color

#5145d3

#5145d3
hex#5145d3
rgbrgb(81, 69, 211)
hslhsl(245, 62%, 55%)
oklchoklch(0.494 0.209 279.3)
Closest name: Blurple (#5539cc)Relative luminance 0.1071

Colors that go with #5145d3

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 →

#c8d345

#4580d3 · #9845d3

#d35145 · #45d351

Split-complementary

Open in tool →

#d39845 · #80d345

#d34580 · #c8d345 · #45d398

Contrast

#5145d3 as textRatioAAAA largeAAAFix
Aaon white
6.68:1passpassfail
  • AAA: use #493dd1 as the text (7.31:1)
Aaon black
3.14:1failpassfail
  • AA: use #7066db as the text (4.61:1)
  • AAA: use #938be4 as the text (7.05:1)
  • AA: or shift the background to #d4d4d4 (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5145d3 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

#5145d3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5145d3
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 #5145d3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5145d3-a49cc4-dfa54e-261f2d-e9ecf1?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