Color

#404fa5

#404fa5
hex#404fa5
rgbrgb(64, 79, 165)
hslhsl(231, 44%, 45%)
oklchoklch(0.463 0.139 272.4)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.094

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a59640

#4082a5 · #6440a5

#a5404f · #4fa540

Split-complementary

Open in tool →

#a56440 · #82a540

#a54082 · #a59640 · #40a564

Contrast

#404fa5 as textRatioAAAA largeAAAFix
Aaon white
7.29:1passpasspassPasses AAA — no fix needed.
Aaon black
2.88:1failfailfail
  • AA: use #6170c2 as the text (4.6:1)
  • AAA: use #8994d1 as the text (7.22:1)
  • AA: or shift the background to #cccccc (4.54:1)
  • AAA: or shift the background to #fcfcfc (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #404fa5 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

#404fa5 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #404fa5
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 #404fa5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/404fa5-9c9ec4-df834e-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