Color

#187efb

#187efb
hex#187efb
rgbrgb(24, 126, 251)
hslhsl(213, 97%, 54%)
oklchoklch(0.61 0.206 257.2)
Closest name: Azure (#007fff)Relative luminance 0.2208

Colors that go with #187efb

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 →

#fb9518

#18f0fb · #2318fb

#fb187e · #7efb18

Split-complementary

Open in tool →

#fb2318 · #f0fb18

#fb18f0 · #fb9518 · #18fb23

Contrast

#187efb as textRatioAAAA largeAAAFix
Aaon white
3.88:1failpassfail
  • AA: use #046ff1 as the text (4.62:1)
  • AAA: use #0353b5 as the text (7.22:1)
  • AA: or shift the background to #171717 (4.62:1)
Aaon black
5.42:1passpassfail
  • AAA: use #4597fc as the text (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #187efb as the background.

Brands using this color

Fonts for this mood

#187efb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #187efb
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 #187efb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/187efb-9ca9c4-df584e-1f202d-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