Color

#5153bd

#5153bd
hex#5153bd
rgbrgb(81, 83, 189)
hslhsl(239, 45%, 53%)
oklchoklch(0.5 0.163 277.9)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1161

Colors that go with #5153bd

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 →

#bdbb51

#5189bd · #8551bd

#bd5153 · #53bd51

Split-complementary

Open in tool →

#bd8551 · #89bd51

#bd5189 · #bdbb51 · #51bd85

Contrast

#5153bd as textRatioAAAA largeAAAFix
Aaon white
6.32:1passpassfail
  • AAA: use #4648b9 as the text (7.27:1)
Aaon black
3.32:1failpassfail
  • AA: use #6b6dc7 as the text (4.64:1)
  • AAA: use #9091d5 as the text (7.2:1)
  • AA: or shift the background to #dbdbdb (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5153bd 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

#5153bd reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5153bd
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 #5153bd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5153bd-a09cc4-df964e-251f2d-e9edf1?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