Color

#3e54ac

#3e54ac
hex#3e54ac
rgbrgb(62, 84, 172)
hslhsl(228, 47%, 46%)
oklchoklch(0.477 0.143 269.7)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1034

Colors that go with #3e54ac

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 →

#ac963e

#3e8bac · #5f3eac

#ac3e54 · #54ac3e

Split-complementary

Open in tool →

#ac5f3e · #8bac3e

#ac3e8b · #ac963e · #3eac5f

Contrast

#3e54ac as textRatioAAAA largeAAAFix
Aaon white
6.84:1passpassfail
  • AAA: use #3d52a9 as the text (7.05:1)
Aaon black
3.07:1failpassfail
  • AA: use #5a6fc4 as the text (4.51:1)
  • AAA: use #8393d2 as the text (7.07:1)
  • AA: or shift the background to #d4d4d4 (4.62:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3e54ac 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

#3e54ac reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3e54ac
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 #3e54ac and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3e54ac-9c9fc4-df7c4e-231f2d-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