Color

#2c43ba

#2c43ba
hex#2c43ba
rgbrgb(44, 67, 186)
hslhsl(230, 62%, 45%)
oklchoklch(0.446 0.188 268.7)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.0809

Colors that go with #2c43ba

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 →

#baa22c

#2c8aba · #5b2cba

#ba2c43 · #43ba2c

Split-complementary

Open in tool →

#ba5b2c · #8aba2c

#ba2c8a · #baa22c · #2cba5b

Contrast

#2c43ba as textRatioAAAA largeAAAFix
Aaon white
8.02:1passpasspassPasses AAA — no fix needed.
Aaon black
2.62:1failfailfail
  • AA: use #5a6fd8 as the text (4.7:1)
  • AAA: use #8393e2 as the text (7.24:1)
  • AA: or shift the background to #c2c2c2 (4.5:1)
  • AAA: or shift the background to #f0f0f0 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2c43ba 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

#2c43ba reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2c43ba
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 #2c43ba and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2c43ba-9c9ec4-df814e-231f2d-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