Color

#0b8598

#0b8598
hex#0b8598
rgbrgb(11, 133, 152)
hslhsl(188, 87%, 32%)
oklchoklch(0.567 0.097 212.5)
Closest name: Ahoy! Blue (#0082a1)Relative luminance 0.1911

Colors that go with #0b8598

Charcoal, Copper 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 →

#991e0b

#0b9965 · #0b3f99

#990b86 · #86990b

Split-complementary

Open in tool →

#990b3f · #99650b

#650b99 · #991e0b · #3f990b

Contrast

#0b8598 as textRatioAAAA largeAAAFix
Aaon white
4.35:1failpassfail
  • AA: use #0a8194 as the text (4.58:1)
  • AAA: use #08606e as the text (7.22:1)
  • AA: or shift the background to #0a0a0a (4.55:1)
Aaon black
4.82:1passpassfail
  • AAA: use #0da7bf as the text (7.3:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0b8598 as the background.

Brands using this color

Fonts for this mood

#0b8598 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0b8598
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 #0b8598 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0b8598-a2b7be-df4e81-1f252d-e9f1ee?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