Color

#2d3bbe

#2d3bbe
hex#2d3bbe
rgbrgb(45, 59, 190)
hslhsl(234, 62%, 46%)
oklchoklch(0.436 0.202 270.3)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.074

Colors that go with #2d3bbe

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 →

#beaf2d

#2d84be · #672dbe

#be2d3b · #3bbe2d

Split-complementary

Open in tool →

#be672d · #84be2d

#be2d84 · #beaf2d · #2dbe67

Contrast

#2d3bbe as textRatioAAAA largeAAAFix
Aaon white
8.47:1passpasspassPasses AAA — no fix needed.
Aaon black
2.48:1failfailfail
  • AA: use #5e6ad9 as the text (4.54:1)
  • AAA: use #8790e3 as the text (7.13:1)
  • AA: or shift the background to #bdbdbd (4.51:1)
  • AAA: or shift the background to #ebebeb (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2d3bbe 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

#2d3bbe reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2d3bbe
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 #2d3bbe and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2d3bbe-9d9cc4-df8a4e-241f2d-e9eef1?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