Color

#288ba4

#288ba4
hex#288ba4
rgbrgb(40, 139, 164)
hslhsl(192, 61%, 40%)
oklchoklch(0.592 0.095 218.8)
Closest name: Blue Moon (#3992a8)Relative luminance 0.216

Colors that go with #288ba4

Charcoal, Copper and Crimson 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 →

#a44128

#28a47f · #284da4

#a4288b · #8ba428

Split-complementary

Open in tool →

#a4284d · #a47f28

#7f28a4 · #a44128 · #4da428

Contrast

#288ba4 as textRatioAAAA largeAAAFix
Aaon white
3.95:1failpassfail
  • AA: use #247d94 as the text (4.73:1)
  • AAA: use #1b5e6f as the text (7.3:1)
  • AA: or shift the background to #171717 (4.54:1)
Aaon black
5.32:1passpassfail
  • AAA: use #2fa4c1 as the text (7.2:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #288ba4 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#288ba4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #288ba4
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 #288ba4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/288ba4-a2b5be-df4e77-1f242d-e9f1ef?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