Color

#4b66af

#4b66af
hex#4b66af
rgbrgb(75, 102, 175)
hslhsl(224, 40%, 49%)
oklchoklch(0.525 0.12 267)
Closest name: Bellflower (#5d66aa)Relative luminance 0.1409

Colors that go with #4b66af

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 →

#af944b

#4b98af · #624baf

#af4b66 · #66af4b

Split-complementary

Open in tool →

#af624b · #98af4b

#af4b98 · #af944b · #4baf62

Contrast

#4b66af as textRatioAAAA largeAAAFix
Aaon white
5.5:1passpassfail
  • AAA: use #3f5592 as the text (7.18:1)
Aaon black
3.82:1failpassfail
  • AA: use #5b74b9 as the text (4.64:1)
  • AAA: use #8295c9 as the text (7.09:1)
  • AA: or shift the background to #ebebeb (4.61:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4b66af 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

#4b66af reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4b66af
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 #4b66af and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4b66af-9ca2c4-df724e-221f2d-e9eff1?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