Color

#3e5abb

#3e5abb
hex#3e5abb
rgbrgb(62, 90, 187)
hslhsl(227, 50%, 49%)
oklchoklch(0.5 0.156 268.2)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1192

Colors that go with #3e5abb

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 →

#bba03e

#3e98bb · #623ebb

#bb3e5a · #5abb3e

Split-complementary

Open in tool →

#bb623e · #98bb3e

#bb3e98 · #bba03e · #3ebb62

Contrast

#3e5abb as textRatioAAAA largeAAAFix
Aaon white
6.2:1passpassfail
  • AAA: use #3952ac as the text (7.06:1)
Aaon black
3.38:1failpassfail
  • AA: use #576fc7 as the text (4.5:1)
  • AAA: use #8193d5 as the text (7.07:1)
  • AA: or shift the background to #dedede (4.61:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3e5abb as the background.

Brands using this color

Fonts for this mood

#3e5abb reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3e5abb
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 #3e5abb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3e5abb-9ca0c4-df7a4e-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