Color

#424e9e

#424e9e
hex#424e9e
rgbrgb(66, 78, 158)
hslhsl(232, 41%, 44%)
oklchoklch(0.457 0.129 273.8)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.0908

Colors that go with #424e9e

Charcoal, Sea Green and Steel Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#9e9242

#427c9e · #64429e

#9e424e · #4e9e42

Split-complementary

Open in tool →

#9e6442 · #7c9e42

#9e427c · #9e9242 · #429e64

Contrast

#424e9e as textRatioAAAA largeAAAFix
Aaon white
7.46:1passpasspassPasses AAA — no fix needed.
Aaon black
2.82:1failfailfail
  • AA: use #6470be as the text (4.6:1)
  • AAA: use #8892cd as the text (7.04:1)
  • AA: or shift the background to #c9c9c9 (4.5:1)
  • AAA: or shift the background to #fafafa (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #424e9e 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

#424e9e reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #424e9e
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #424e9e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/424e9e-9c9dc4-df864e-231f2d-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