Color

#41378b

#41378b
hex#41378b
rgbrgb(65, 55, 139)
hslhsl(247, 43%, 38%)
oklchoklch(0.397 0.134 283.8)
Closest name: darkslateblue (#483d8b)Relative luminance 0.0572

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#818b37

#37578b · #6b378b

#8b4137 · #378b41

Split-complementary

Open in tool →

#8b6b37 · #578b37

#8b3757 · #818b37 · #378b6b

Contrast

#41378b as textRatioAAAA largeAAAFix
Aaon white
9.79:1passpasspassPasses AAA — no fix needed.
Aaon black
2.14:1failfailfail
  • AA: use #7469c3 as the text (4.55:1)
  • AAA: use #968ed2 as the text (7.1:1)
  • AA: or shift the background to #b0b0b0 (4.52:1)
  • AAA: or shift the background to #dbdbdb (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 #41378b 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

#41378b reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #41378b
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #41378b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/41378b-a59cc4-dfaa4e-271f2d-e9ecf1?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