Color

#2870af

#2870af
hex#2870af
rgbrgb(40, 112, 175)
hslhsl(208, 63%, 42%)
oklchoklch(0.532 0.122 248.8)
Closest name: Brilliant Blue (#0075b3)Relative luminance 0.1513

Colors that go with #2870af

Charcoal, Crimson and Rust 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 →

#af6728

#28afaa · #282caf

#af2870 · #70af28

Split-complementary

Open in tool →

#af282c · #afaa28

#aa28af · #af6728 · #2caf28

Contrast

#2870af as textRatioAAAA largeAAAFix
Aaon white
5.21:1passpassfail
  • AAA: use #205a8d as the text (7.22:1)
Aaon black
4.03:1failpassfail
  • AA: use #2a78bb as the text (4.5:1)
  • AAA: use #559bd8 as the text (7.07:1)
  • AA: or shift the background to #f0f0f0 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2870af as the background.

Brands using this color

Fonts for this mood

#2870af reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2870af
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 #2870af and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2870af-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