Color

#5f99ab

#5f99ab
hex#5f99ab
rgbrgb(95, 153, 171)
hslhsl(194, 31%, 52%)
oklchoklch(0.65 0.066 219.7)
Closest name: Atlas Cedar (#5ca0a7)Relative luminance 0.2816

Colors that go with #5f99ab

Charcoal, Copper and Terracotta 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.

Real palettes that use #5f99ab

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#ab705f

#5fab96 · #5f73ab

#ab5f99 · #99ab5f

Split-complementary

Open in tool →

#ab5f73 · #ab965f

#965fab · #ab705f · #73ab5f

Contrast

#5f99ab as textRatioAAAA largeAAAFix
Aaon white
3.17:1failpassfail
  • AA: use #4a7d8c as the text (4.56:1)
  • AAA: use #375c68 as the text (7.26:1)
  • AA: or shift the background to #292929 (4.59:1)
Aaon black
6.63:1passpassfail
  • AAA: use #699fb0 as the text (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5f99ab as the background.

Brands using this color

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

mcpConnect your agent — build around #5f99ab
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 #5f99ab and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5f99ab-9cb6c4-df4e72-1f242d-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