Color

#12aafd

#12aafd
hex#12aafd
rgbrgb(18, 170, 253)
hslhsl(201, 98%, 53%)
oklchoklch(0.707 0.164 242)
Closest name: Cerulean (#55aaee)Relative luminance 0.3597

Colors that go with #12aafd

Charcoal, Amber and 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 →

#fd6412

#12fdd9 · #1235fd

#fd12aa · #aafd12

Split-complementary

Open in tool →

#fd1235 · #fdd912

#d912fd · #fd6412 · #35fd12

Contrast

#12aafd as textRatioAAAA largeAAAFix
Aaon white
2.56:1failfailfail
  • AA: use #027abb as the text (4.66:1)
  • AAA: use #015c8d as the text (7.2:1)
  • AA: or shift the background to #383838 (4.58:1)
  • AAA: or shift the background to #141414 (7.19:1)
Aaon black
8.19:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #12aafd as the background.

Brands using this color

Fonts for this mood

#12aafd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #12aafd
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 #12aafd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/12aafd-9cb1c4-df4e62-1f222d-e9f1f0?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