Color

#187bfb

#187bfb
hex#187bfb
rgbrgb(24, 123, 251)
hslhsl(214, 97%, 54%)
oklchoklch(0.604 0.21 257.9)
Closest name: Azure (#007fff)Relative luminance 0.2133

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#fb9918

#18ecfb · #2718fb

#fb187b · #7bfb18

Split-complementary

Open in tool →

#fb2718 · #ecfb18

#fb18ec · #fb9918 · #18fb27

Contrast

#187bfb as textRatioAAAA largeAAAFix
Aaon white
3.99:1failpassfail
  • AA: use #046df6 as the text (4.64:1)
  • AAA: use #0352ba as the text (7.19:1)
  • AA: or shift the background to #141414 (4.62:1)
Aaon black
5.27:1passpassfail
  • AAA: use #4a97fc as the text (7.12:1)

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

Brands using this color

Fonts for this mood

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

mcpConnect your agent — build around #187bfb
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #187bfb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/187bfb-9ca9c4-df5a4e-1f1f2d-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