Color

#425eb3

#425eb3
hex#425eb3
rgbrgb(66, 94, 179)
hslhsl(225, 46%, 48%)
oklchoklch(0.505 0.139 267.6)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1242

Colors that go with #425eb3

Charcoal, Sea Green and Amber 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 →

#b39742

#4297b3 · #5e42b3

#b3425e · #5eb342

Split-complementary

Open in tool →

#b35e42 · #97b342

#b34297 · #b39742 · #42b35e

Contrast

#425eb3 as textRatioAAAA largeAAAFix
Aaon white
6.03:1passpassfail
  • AAA: use #3b54a0 as the text (7.09:1)
Aaon black
3.48:1failpassfail
  • AA: use #5772c1 as the text (4.58:1)
  • AAA: use #8094d0 as the text (7.06:1)
  • AA: or shift the background to #e0e0e0 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #425eb3 as the background.

Brands using this color

Fonts for this mood

#425eb3 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #425eb3
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 #425eb3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/425eb3-9ca1c4-df754e-221f2d-e9eff1?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