Color

#4040ce

#4040ce
hex#4040ce
rgbrgb(64, 64, 206)
hslhsl(240, 59%, 53%)
oklchoklch(0.47 0.212 274.6)
Closest name: Blurple (#5539cc)Relative luminance 0.0921

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cece40

#4087ce · #8740ce

#ce4040 · #40ce40

Split-complementary

Open in tool →

#ce8740 · #87ce40

#ce4087 · #cece40 · #40ce87

Contrast

#4040ce as textRatioAAAA largeAAAFix
Aaon white
7.39:1passpasspassPasses AAA — no fix needed.
Aaon black
2.84:1failfailfail
  • AA: use #6969d8 as the text (4.61:1)
  • AAA: use #8d8de2 as the text (7.04:1)
  • AA: or shift the background to #cccccc (4.6:1)
  • AAA: or shift the background to #fafafa (7.08:1)

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

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

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

tool url/palettes/new/4040ce-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