Color

#3827ec

#3827ec
hex#3827ec
rgbrgb(56, 39, 236)
hslhsl(245, 84%, 54%)
oklchoklch(0.466 0.269 272.4)
Closest name: Blustering Blue (#4411ff)Relative luminance 0.0835

Colors that go with #3827ec

Charcoal, Cobalt Blue and Cornflower Blue 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 →

#dcec27

#2779ec · #9a27ec

#ec3827 · #27ec38

Split-complementary

Open in tool →

#ec9a27 · #79ec27

#ec2779 · #dcec27 · #27ec9a

Contrast

#3827ec as textRatioAAAA largeAAAFix
Aaon white
7.87:1passpasspassPasses AAA — no fix needed.
Aaon black
2.67:1failfailfail
  • AA: use #6c5ff1 as the text (4.54:1)
  • AAA: use #938af5 as the text (7.19:1)
  • AA: or shift the background to #c4c4c4 (4.51:1)
  • AAA: or shift the background to #f2f2f2 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3827ec as the background.

Brands using this color

Fonts for this mood

#3827ec reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3827ec
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 #3827ec and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3827ec-a49cc4-dfa54e-261f2d-e9ecf1?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