Color

#12f3eb

#12f3eb
hex#12f3eb
rgbrgb(18, 243, 235)
hslhsl(178, 90%, 51%)
oklchoklch(0.871 0.149 190.5)
Closest name: Frozen Boubble (#00eedd)Relative luminance 0.7023

Colors that go with #12f3eb

Charcoal, Deep Sky Blue and Taupe 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 →

#f31219

#12f37b · #128af3

#eb12f3 · #f3eb12

Split-complementary

Open in tool →

#f3128a · #f37b12

#7b12f3 · #f31219 · #8af312

Contrast

#12f3eb as textRatioAAAA largeAAAFix
Aaon white
1.4:1failfailfail
  • AA: use #07837f as the text (4.6:1)
  • AAA: use #05615e as the text (7.3:1)
  • AA: or shift the background to #5e5e5e (4.65:1)
  • AAA: or shift the background to #424242 (7.2:1)
Aaon black
15.05:1passpasspassPasses 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 #12f3eb as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #12f3eb
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 #12f3eb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/12f3eb-a2bcbe-d45999-1f282d-e9f1ed?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