Color

#1576cb

#1576cb
hex#1576cb
rgbrgb(21, 118, 203)
hslhsl(208, 81%, 44%)
oklchoklch(0.559 0.155 251.3)
Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.1743

Colors that go with #1576cb

Charcoal, Crimson and Sienna 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 →

#cb6a15

#15cbc5 · #151bcb

#cb1576 · #76cb15

Split-complementary

Open in tool →

#cb151b · #cbc515

#c515cb · #cb6a15 · #1bcb15

Contrast

#1576cb as textRatioAAAA largeAAAFix
Aaon white
4.68:1passpassfail
  • AAA: use #105998 as the text (7.23:1)
Aaon black
4.49:1failpassfail
  • AA: use #1679d0 as the text (4.68:1)
  • AAA: use #3d9aeb as the text (7.02:1)
  • AA: or shift the background to #fcfcfc (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1576cb as the background.

Brands using this color

Fonts for this mood

#1576cb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1576cb
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 #1576cb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1576cb-9cadc4-df4e51-1f212d-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