Color

#404fbf

#404fbf
hex#404fbf
rgbrgb(64, 79, 191)
hslhsl(233, 50%, 50%)
oklchoklch(0.483 0.175 272.3)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1044

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bfb040

#408ebf · #7140bf

#bf404f · #4fbf40

Split-complementary

Open in tool →

#bf7140 · #8ebf40

#bf408e · #bfb040 · #40bf71

Contrast

#404fbf as textRatioAAAA largeAAAFix
Aaon white
6.8:1passpassfail
  • AAA: use #3e4dbb as the text (7.04:1)
Aaon black
3.09:1failpassfail
  • AA: use #626ecb as the text (4.61:1)
  • AAA: use #8892d7 as the text (7.14:1)
  • AA: or shift the background to #d4d4d4 (4.59:1)

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

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

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

tool url/palettes/new/404fbf-9c9cc4-df884e-241f2d-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