Color

#424ea9

#424ea9
hex#424ea9
rgbrgb(66, 78, 169)
hslhsl(233, 44%, 46%)
oklchoklch(0.465 0.145 273.7)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.0947

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a99d42

#4281a9 · #6942a9

#a9424e · #4ea942

Split-complementary

Open in tool →

#a96942 · #81a942

#a94281 · #a99d42 · #42a969

Contrast

#424ea9 as textRatioAAAA largeAAAFix
Aaon white
7.26:1passpasspassPasses AAA — no fix needed.
Aaon black
2.89:1failfailfail
  • AA: use #6570c3 as the text (4.66:1)
  • AAA: use #8992d1 as the text (7.1:1)
  • AA: or shift the background to #cccccc (4.52:1)
  • AAA: or shift the background to #fcfcfc (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #424ea9 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

#424ea9 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #424ea9
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 #424ea9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/424ea9-9c9cc4-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