Color

#404b91

#404b91
hex#404b91
rgbrgb(64, 75, 145)
hslhsl(232, 39%, 41%)
oklchoklch(0.44 0.115 274)
Closest name: Blueberry (#464196)Relative luminance 0.0817

Tints & shades

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

Harmonies

Complementary

Open in tool →

#918640

#407391 · #5e4091

#91404b · #4b9140

Split-complementary

Open in tool →

#915e40 · #739140

#914073 · #918640 · #40915e

Contrast

#404b91 as textRatioAAAA largeAAAFix
Aaon white
7.97:1passpasspassPasses AAA — no fix needed.
Aaon black
2.63:1failfailfail
  • AA: use #636fbb as the text (4.52:1)
  • AAA: use #8a93cc as the text (7.13:1)
  • AA: or shift the background to #c4c4c4 (4.57:1)
  • AAA: or shift the background to #f2f2f2 (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #404b91 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

#404b91 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #404b91
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 #404b91 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/404b91-9c9dc4-df864e-231f2d-e9eef1?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