Color

#40618c

#40618c
hex#40618c
rgbrgb(64, 97, 140)
hslhsl(214, 37%, 40%)
oklchoklch(0.487 0.08 255.5)
Closest name: Admiral Blue (#50647f)Relative luminance 0.1153

Colors that go with #40618c

Charcoal, Sea Green and Sienna 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 →

#8c6b40

#40878c · #45408c

#8c4061 · #618c40

Split-complementary

Open in tool →

#8c4540 · #878c40

#8c4087 · #8c6b40 · #408c45

Contrast

#40618c as textRatioAAAA largeAAAFix
Aaon white
6.35:1passpassfail
  • AAA: use #3b5a81 as the text (7.08:1)
Aaon black
3.31:1failpassfail
  • AA: use #4f77ab as the text (4.56:1)
  • AAA: use #7a99c2 as the text (7.16:1)
  • AA: or shift the background to #dbdbdb (4.59:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #40618c as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#40618c reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #40618c
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 #40618c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40618c-9ca9c4-df5a4e-1f1f2d-e9f0f1?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