Color

#403f92

#403f92
hex#403f92
rgbrgb(64, 63, 146)
hslhsl(241, 40%, 41%)
oklchoklch(0.417 0.133 279.5)
Closest name: Blueberry (#464196)Relative luminance 0.0672

Tints & shades

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

Harmonies

Complementary

Open in tool →

#91923f

#3f6792 · #6a3f92

#92403f · #3f9240

Split-complementary

Open in tool →

#926a3f · #67923f

#923f67 · #91923f · #3f926a

Contrast

#403f92 as textRatioAAAA largeAAAFix
Aaon white
8.96:1passpasspassPasses AAA — no fix needed.
Aaon black
2.34:1failfailfail
  • AA: use #6e6dc0 as the text (4.61:1)
  • AAA: use #9190d0 as the text (7.1:1)
  • AA: or shift the background to #b8b8b8 (4.52:1)
  • AAA: or shift the background to #e6e6e6 (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #403f92 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

#403f92 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #403f92
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 #403f92 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/403f92-a19cc4-df9b4e-261f2d-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