Color

#1812ca

#1812ca
hex#1812ca
rgbrgb(24, 18, 202)
hslhsl(242, 84%, 43%)
oklchoklch(0.394 0.253 267.2)
Closest name: mediumblue (#0000cd)Relative luminance 0.0489

Colors that go with #1812ca

Charcoal, Crimson and Cornflower 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 →

#c4ca12

#1268ca · #7412ca

#ca1812 · #12ca18

Split-complementary

Open in tool →

#ca7412 · #68ca12

#ca1268 · #c4ca12 · #12ca74

Contrast

#1812ca as textRatioAAAA largeAAAFix
Aaon white
10.62:1passpasspassPasses AAA — no fix needed.
Aaon black
1.98:1failfailfail
  • AA: use #6964f2 as the text (4.71:1)
  • AAA: use #8d8af5 as the text (7.09:1)
  • AA: or shift the background to #ababab (4.62:1)
  • AAA: or shift the background to #d4d4d4 (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1812ca as the background.

Brands using this color

Fonts for this mood

#1812ca reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1812ca
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 #1812ca and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1812ca-a29cc4-df9e4e-261f2d-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