Color

#1877fb

#1877fb
hex#1877fb
rgbrgb(24, 119, 251)
hslhsl(215, 97%, 54%)
oklchoklch(0.596 0.214 258.8)
Closest name: Azure (#007fff)Relative luminance 0.2035

Colors that go with #1877fb

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 →

#fb9d18

#18e9fb · #2b18fb

#fb1877 · #77fb18

Split-complementary

Open in tool →

#fb2b18 · #e9fb18

#fb18e9 · #fb9d18 · #18fb2b

Contrast

#1877fb as textRatioAAAA largeAAAFix
Aaon white
4.14:1failpassfail
  • AA: use #096efb as the text (4.53:1)
  • AAA: use #0351bf as the text (7.16:1)
  • AA: or shift the background to #121212 (4.52:1)
Aaon black
5.07:1passpassfail
  • AAA: use #4f97fc as the text (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1877fb as the background.

Brands using this color

Fonts for this mood

#1877fb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1877fb
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 #1877fb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1877fb-9ca8c4-df5d4e-201f2d-e9f0f1?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