Color

#424bcd

#424bcd
hex#424bcd
rgbrgb(66, 75, 205)
hslhsl(236, 58%, 53%)
oklchoklch(0.489 0.198 273.4)
Closest name: Blurple (#5539cc)Relative luminance 0.106

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cdc342

#4290cd · #7e42cd

#cd424b · #4bcd42

Split-complementary

Open in tool →

#cd7e42 · #90cd42

#cd4290 · #cdc342 · #42cd7e

Contrast

#424bcd as textRatioAAAA largeAAAFix
Aaon white
6.73:1passpassfail
  • AAA: use #3e47cc as the text (7.05:1)
Aaon black
3.12:1failpassfail
  • AA: use #626ad5 as the text (4.54:1)
  • AAA: use #8a90e0 as the text (7.15:1)
  • AA: or shift the background to #d4d4d4 (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #424bcd 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

#424bcd reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #424bcd
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 #424bcd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/424bcd-9e9cc4-df8f4e-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