Color

#5999c9

#5999c9
hex#5999c9
rgbrgb(89, 153, 201)
hslhsl(206, 51%, 57%)
oklchoklch(0.66 0.098 242.6)
Closest name: Canadian Tuxedo (#579aca)Relative luminance 0.2912

Colors that go with #5999c9

Charcoal, Peru 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 →

#c98a59

#59c9c2 · #5961c9

#c95999 · #99c959

Split-complementary

Open in tool →

#c95961 · #c9c259

#c259c9 · #c98a59 · #61c959

Contrast

#5999c9 as textRatioAAAA largeAAAFix
Aaon white
3.08:1failpassfail
  • AA: use #387bad as the text (4.56:1)
  • AAA: use #2a5d83 as the text (7.02:1)
  • AA: or shift the background to #2b2b2b (4.6:1)
Aaon black
6.82:1passpassfail
  • AAA: use #5d9bcb as the text (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5999c9 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

#5999c9 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5999c9
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 #5999c9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5999c9-9caec4-df4e56-1f212d-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