Color

#286bb8

#286bb8
hex#286bb8
rgbrgb(40, 107, 184)
hslhsl(212, 64%, 44%)
oklchoklch(0.526 0.138 254.4)
Closest name: Campanula (#3473b7)Relative luminance 0.1443

Colors that go with #286bb8

Charcoal, Crimson and Amber 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 →

#b87528

#28b3b8 · #2d28b8

#b8286b · #6bb828

Split-complementary

Open in tool →

#b82d28 · #b3b828

#b828b3 · #b87528 · #28b82d

Contrast

#286bb8 as textRatioAAAA largeAAAFix
Aaon white
5.4:1passpassfail
  • AAA: use #215897 as the text (7.22:1)
Aaon black
3.89:1failpassfail
  • AA: use #2d78cd as the text (4.68:1)
  • AAA: use #609adc as the text (7.15:1)
  • AA: or shift the background to #ebebeb (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #286bb8 as the background.

Brands using this color

Fonts for this mood

#286bb8 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #286bb8
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 #286bb8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/286bb8-9caac4-df564e-1f202d-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