Color

#3e77ea

#3e77ea
hex#3e77ea
rgbrgb(62, 119, 234)
hslhsl(220, 80%, 58%)
oklchoklch(0.593 0.184 262.4)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.2016

Colors that go with #3e77ea

Charcoal, Crimson and Copper 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 →

#eab03e

#3ecdea · #5b3eea

#ea3e77 · #77ea3e

Split-complementary

Open in tool →

#ea5b3e · #cdea3e

#ea3ecd · #eab03e · #3eea5b

Contrast

#3e77ea as textRatioAAAA largeAAAFix
Aaon white
4.17:1failpassfail
  • AA: use #306ee8 as the text (4.64:1)
  • AAA: use #1650c5 as the text (7.03:1)
  • AA: or shift the background to #0f0f0f (4.59:1)
Aaon black
5.03:1passpassfail
  • AAA: use #6894ee as the text (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3e77ea 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

#3e77ea reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3e77ea
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 #3e77ea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3e77ea-9ca5c4-df694e-211f2d-e9f0f1?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