Color

#1b80de

#1b80de
hex#1b80de
rgbrgb(27, 128, 222)
hslhsl(209, 78%, 49%)
oklchoklch(0.595 0.167 252.2)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2095

Colors that go with #1b80de

Charcoal, Crimson and Copper 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 →

#de7a1b

#1bdedb · #1b1fde

#de1b80 · #80de1b

Split-complementary

Open in tool →

#de1b1f · #dedb1b

#db1bde · #de7a1b · #1fde1b

Contrast

#1b80de as textRatioAAAA largeAAAFix
Aaon white
4.05:1failpassfail
  • AA: use #1a78d1 as the text (4.51:1)
  • AAA: use #13599a as the text (7.18:1)
  • AA: or shift the background to #141414 (4.55:1)
Aaon black
5.19:1passpassfail
  • AAA: use #499ce9 as the text (7.22:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1b80de as the background.

Brands using this color

Fonts for this mood

#1b80de reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1b80de
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 #1b80de and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1b80de-9cacc4-df4e4e-1f212d-e9f1f1?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