Color

#3001cb

#3001cb
hex#3001cb
rgbrgb(48, 1, 203)
hslhsl(254, 99%, 40%)
oklchoklch(0.399 0.253 273.5)
Closest name: Busty Blue (#3300cc)Relative luminance 0.0496

Colors that go with #3001cb

Charcoal, Cornflower Blue and Crimson 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 →

#9ccb01

#0137cb · #9501cb

#cb3001 · #01cb30

Split-complementary

Open in tool →

#cb9501 · #37cb01

#cb0137 · #9ccb01 · #01cb95

Contrast

#3001cb as textRatioAAAA largeAAAFix
Aaon white
10.54:1passpasspassPasses AAA — no fix needed.
Aaon black
1.99:1failfailfail
  • AA: use #7e58fe as the text (4.71:1)
  • AAA: use #a185fe as the text (7.3:1)
  • AA: or shift the background to #ababab (4.59:1)
  • AAA: or shift the background to #d4d4d4 (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 #3001cb 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

#3001cb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3001cb
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 #3001cb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3001cb-aa9cc4-dfbb4e-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