Color

#3e73ef

#3e73ef
hex#3e73ef
rgbrgb(62, 115, 239)
hslhsl(222, 85%, 59%)
oklchoklch(0.589 0.196 263.9)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.1952

Colors that go with #3e73ef

Charcoal, Crimson 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 →

#efba3e

#3eccef · #613eef

#ef3e73 · #73ef3e

Split-complementary

Open in tool →

#ef613e · #ccef3e

#ef3ecc · #efba3e · #3eef61

Contrast

#3e73ef as textRatioAAAA largeAAAFix
Aaon white
4.28:1failpassfail
  • AA: use #346cef as the text (4.63:1)
  • AAA: use #114ad0 as the text (7.21:1)
  • AA: or shift the background to #0d0d0d (4.54:1)
Aaon black
4.9:1passpassfail
  • AAA: use #6d95f3 as the text (7.24:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3e73ef 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

#3e73ef reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3e73ef
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 #3e73ef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3e73ef-9ca3c4-df6e4e-211f2d-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