Color

#5257a3

#5257a3
hex#5257a3
rgbrgb(82, 87, 163)
hslhsl(236, 33%, 48%)
oklchoklch(0.49 0.12 278.1)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1125

Colors that go with #5257a3

Charcoal, Amber and 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 →

#a39d52

#5280a3 · #7552a3

#a35257 · #57a352

Split-complementary

Open in tool →

#a37552 · #80a352

#a35280 · #a39d52 · #52a375

Contrast

#5257a3 as textRatioAAAA largeAAAFix
Aaon white
6.46:1passpassfail
  • AAA: use #4d5299 as the text (7.04:1)
Aaon black
3.25:1failpassfail
  • AA: use #6a6fb4 as the text (4.55:1)
  • AAA: use #8f93c7 as the text (7.17:1)
  • AA: or shift the background to #d9d9d9 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5257a3 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #5257a3
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 #5257a3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5257a3-9e9cc4-df8f4e-241f2d-e9eef1?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