Color

#3838b2

#3838b2
hex#3838b2
rgbrgb(56, 56, 178)
hslhsl(240, 52%, 46%)
oklchoklch(0.426 0.187 275)
Closest name: Bluebell (#333399)Relative luminance 0.0688

Colors that go with #3838b2

Charcoal, Sea Green and Steel 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 →

#b2b238

#3875b2 · #7538b2

#b23838 · #38b238

Split-complementary

Open in tool →

#b27538 · #75b238

#b23875 · #b2b238 · #38b275

Contrast

#3838b2 as textRatioAAAA largeAAAFix
Aaon white
8.84:1passpasspassPasses AAA — no fix needed.
Aaon black
2.38:1failfailfail
  • AA: use #6c6cd0 as the text (4.69:1)
  • AAA: use #8f8fdc as the text (7.13:1)
  • AA: or shift the background to #bababa (4.55:1)
  • AAA: or shift the background to #e6e6e6 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3838b2 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

#3838b2 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3838b2
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 #3838b2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3838b2-a19cc4-df994e-251f2d-e9edf1?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