Color

#3803bf

#3803bf
hex#3803bf
rgbrgb(56, 3, 191)
hslhsl(257, 97%, 38%)
oklchoklch(0.39 0.238 277.7)
Closest name: Galactic Highway (#3311bb)Relative luminance 0.0467

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#8abf03

#032cbf · #9603bf

#bf3803 · #03bf38

Split-complementary

Open in tool →

#bf9603 · #2cbf03

#bf032c · #8abf03 · #03bf96

Contrast

#3803bf as textRatioAAAA largeAAAFix
Aaon white
10.86:1passpasspassPasses AAA — no fix needed.
Aaon black
1.93:1failfailfail
  • AA: use #8454fc as the text (4.65:1)
  • AAA: use #a481fd as the text (7.14:1)
  • AA: or shift the background to #a8a8a8 (4.57:1)
  • AAA: or shift the background to #d1d1d1 (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3803bf 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

#3803bf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3803bf
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #3803bf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3803bf-ac9cc4-dfc24e-291f2d-e9ebf1?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