Color

#40448c

#40448c
hex#40448c
rgbrgb(64, 68, 140)
hslhsl(237, 37%, 40%)
oklchoklch(0.422 0.117 277.7)
Closest name: darkslateblue (#483d8b)Relative luminance 0.0712

Colors that go with #40448c

Charcoal, Steel Blue and Blue 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 →

#8c8840

#406a8c · #62408c

#8c4044 · #448c40

Split-complementary

Open in tool →

#8c6240 · #6a8c40

#8c406a · #8c8840 · #408c62

Contrast

#40448c as textRatioAAAA largeAAAFix
Aaon white
8.67:1passpasspassPasses AAA — no fix needed.
Aaon black
2.42:1failfailfail
  • AA: use #6c70bc as the text (4.68:1)
  • AAA: use #8f92cc as the text (7.15:1)
  • AA: or shift the background to #bdbdbd (4.61:1)
  • AAA: or shift the background to #e8e8e8 (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #40448c 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

#40448c reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #40448c
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 #40448c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40448c-9f9cc4-df924e-251f2d-e9edf1?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