Color

#403abb

#403abb
hex#403abb
rgbrgb(64, 58, 187)
hslhsl(243, 53%, 48%)
oklchoklch(0.443 0.195 277)
Closest name: Denim (#2243b6)Relative luminance 0.077

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b5bb3a

#3a74bb · #813abb

#bb403a · #3abb40

Split-complementary

Open in tool →

#bb813a · #74bb3a

#bb3a74 · #b5bb3a · #3abb81

Contrast

#403abb as textRatioAAAA largeAAAFix
Aaon white
8.27:1passpasspassPasses AAA — no fix needed.
Aaon black
2.54:1failfailfail
  • AA: use #706bd1 as the text (4.71:1)
  • AAA: use #928edc as the text (7.12:1)
  • AA: or shift the background to #c2c2c2 (4.64:1)
  • AAA: or shift the background to #ededed (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 #403abb 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

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

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

tool url/palettes/new/403abb-a39cc4-dfa04e-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