Color

#4063b0

#4063b0
hex#4063b0
rgbrgb(64, 99, 176)
hslhsl(221, 47%, 47%)
oklchoklch(0.513 0.129 264)
Closest name: Bellflower (#5d66aa)Relative luminance 0.1315

Colors that go with #4063b0

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 →

#b08d40

#409cb0 · #5440b0

#b04063 · #63b040

Split-complementary

Open in tool →

#b05440 · #9cb040

#b0409c · #b08d40 · #40b054

Contrast

#4063b0 as textRatioAAAA largeAAAFix
Aaon white
5.79:1passpassfail
  • AAA: use #37579a as the text (7.02:1)
Aaon black
3.63:1failpassfail
  • AA: use #5375c1 as the text (4.68:1)
  • AAA: use #7c96d0 as the text (7.13:1)
  • AA: or shift the background to #e3e3e3 (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4063b0 as the background.

Brands using this color

Fonts for this mood

#4063b0 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4063b0
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 #4063b0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4063b0-9ca4c4-df6b4e-211f2d-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