Color

#404e87

#404e87
hex#404e87
rgbrgb(64, 78, 135)
hslhsl(228, 36%, 39%)
oklchoklch(0.44 0.095 271.6)
Closest name: Assassin (#2d4f83)Relative luminance 0.0829

Tints & shades

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

Harmonies

Complementary

Open in tool →

#877940

#407287 · #554087

#87404e · #4e8740

Split-complementary

Open in tool →

#875540 · #728740

#874072 · #877940 · #408755

Contrast

#404e87 as textRatioAAAA largeAAAFix
Aaon white
7.9:1passpasspassPasses AAA — no fix needed.
Aaon black
2.66:1failfailfail
  • AA: use #6373b6 as the text (4.66:1)
  • AAA: use #8996c8 as the text (7.26:1)
  • AA: or shift the background to #c4c4c4 (4.53:1)
  • AAA: or shift the background to #f2f2f2 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #404e87 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

#404e87 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #404e87
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 #404e87 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/404e87-9c9fc4-df7c4e-231f2d-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