Color

#4c819a

#4c819a
hex#4c819a
rgbrgb(76, 129, 154)
hslhsl(199, 34%, 45%)
oklchoklch(0.576 0.068 229.9)
Closest name: Cry Me a River (#427898)Relative luminance 0.1957

Colors that go with #4c819a

Charcoal, Copper 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 →

#9a644c

#4c9a8b · #4c5a9a

#9a4c81 · #819a4c

Split-complementary

Open in tool →

#9a4c5a · #9a8b4c

#8b4c9a · #9a644c · #5a9a4c

Contrast

#4c819a as textRatioAAAA largeAAAFix
Aaon white
4.27:1failpassfail
  • AA: use #487b93 as the text (4.64:1)
  • AAA: use #365c6d as the text (7.22:1)
  • AA: or shift the background to #0d0d0d (4.55:1)
Aaon black
4.91:1passpassfail
  • AAA: use #699db5 as the text (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4c819a 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 #4c819a
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 #4c819a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4c819a-9cb3c4-df4e66-1f232d-e9f1f0?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