Color

#51bedb

#51bedb
hex#51bedb
rgbrgb(81, 190, 219)
hslhsl(193, 66%, 59%)
oklchoklch(0.75 0.107 218.3)
Closest name: Blue Martini (#52b4d3)Relative luminance 0.4369

Colors that go with #51bedb

Charcoal, Dark Salmon and Denim 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 →

#db6f51

#51dbb4 · #5179db

#db51be · #bedb51

Split-complementary

Open in tool →

#db5179 · #dbb451

#b451db · #db6f51 · #79db51

Contrast

#51bedb as textRatioAAAA largeAAAFix
Aaon white
2.16:1failfailfail
  • AA: use #1f7e98 as the text (4.67:1)
  • AAA: use #175f72 as the text (7.2:1)
  • AA: or shift the background to #424242 (4.66:1)
  • AAA: or shift the background to #262626 (7.02:1)
Aaon black
9.74:1passpasspassPasses 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 #51bedb 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

#51bedb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #51bedb
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 #51bedb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/51bedb-a2b5be-df4e75-1f242d-e9f1ef?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