Color

#4040dd

#4040dd
hex#4040dd
rgbrgb(64, 64, 221)
hslhsl(240, 70%, 56%)
oklchoklch(0.485 0.23 273.7)
Closest name: Blurple (#5539cc)Relative luminance 0.0998

Tints & shades

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

Harmonies

Complementary

Open in tool →

#dddd40

#408fdd · #8f40dd

#dd4040 · #40dd40

Split-complementary

Open in tool →

#dd8f40 · #8fdd40

#dd408f · #dddd40 · #40dd8f

Contrast

#4040dd as textRatioAAAA largeAAAFix
Aaon white
7.01:1passpasspassPasses AAA — no fix needed.
Aaon black
3:1failfailfail
  • AA: use #6767e4 as the text (4.64:1)
  • AAA: use #8e8eeb as the text (7.22:1)
  • AA: or shift the background to #d1d1d1 (4.59:1)
  • AAA: or shift the background to #ffffff (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4040dd 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

#4040dd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

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

tool url/palettes/new/4040dd-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