Color

#4d57ac

#4d57ac
hex#4d57ac
rgbrgb(77, 87, 172)
hslhsl(234, 38%, 49%)
oklchoklch(0.493 0.134 275.3)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1137

Colors that go with #4d57ac

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 →

#aca34d

#4d86ac · #734dac

#ac4d57 · #57ac4d

Split-complementary

Open in tool →

#ac734d · #86ac4d

#ac4d86 · #aca34d · #4dac73

Contrast

#4d57ac as textRatioAAAA largeAAAFix
Aaon white
6.41:1passpassfail
  • AAA: use #47509e as the text (7.22:1)
Aaon black
3.27:1failpassfail
  • AA: use #6870bb as the text (4.62:1)
  • AAA: use #8b91cb as the text (7.01:1)
  • AA: or shift the background to #d9d9d9 (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4d57ac 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

#4d57ac reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4d57ac
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 #4d57ac and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4d57ac-9d9cc4-df8a4e-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