Color

#4040bf

#4040bf
hex#4040bf
rgbrgb(64, 64, 191)
hslhsl(240, 50%, 50%)
oklchoklch(0.457 0.193 275.6)
Closest name: Denim (#2243b6)Relative luminance 0.0852

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bfbf40

#4080bf · #8040bf

#bf4040 · #40bf40

Split-complementary

Open in tool →

#bf8040 · #80bf40

#bf4080 · #bfbf40 · #40bf80

Contrast

#4040bf as textRatioAAAA largeAAAFix
Aaon white
7.77:1passpasspassPasses AAA — no fix needed.
Aaon black
2.7:1failfailfail
  • AA: use #6a6acd as the text (4.56:1)
  • AAA: use #9090da as the text (7.19:1)
  • AA: or shift the background to #c7c7c7 (4.59:1)
  • AAA: or shift the background to #f5f5f5 (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 #4040bf 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

#4040bf reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4040bf
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 #4040bf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4040bf-a19cc4-df994e-251f2d-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