Color

#1212ce

#1212ce
hex#1212ce
rgbrgb(18, 18, 206)
hslhsl(240, 84%, 44%)
oklchoklch(0.397 0.258 266.1)
Closest name: mediumblue (#0000cd)Relative luminance 0.0502

Colors that go with #1212ce

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 →

#cece12

#1270ce · #7012ce

#ce1212 · #12ce12

Split-complementary

Open in tool →

#ce7012 · #70ce12

#ce1270 · #cece12 · #12ce70

Contrast

#1212ce as textRatioAAAA largeAAAFix
Aaon white
10.48:1passpasspassPasses AAA — no fix needed.
Aaon black
2:1failfailfail
  • AA: use #6464f2 as the text (4.65:1)
  • AAA: use #8a8af5 as the text (7.03:1)
  • AA: or shift the background to #ababab (4.56:1)
  • AAA: or shift the background to #d4d4d4 (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1212ce as the background.

Brands using this color

Fonts for this mood

#1212ce reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1212ce
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 #1212ce and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1212ce-a19cc4-df994e-251f2d-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