Color

#0591ad

#0591ad
hex#0591ad
rgbrgb(5, 145, 173)
hslhsl(190, 94%, 35%)
oklchoklch(0.606 0.108 218)
Closest name: Blue Moon (#3992a8)Relative luminance 0.233

Colors that go with #0591ad

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 →

#ad2105

#05ad75 · #053dad

#ad0591 · #91ad05

Split-complementary

Open in tool →

#ad053d · #ad7505

#7505ad · #ad2105 · #3dad05

Contrast

#0591ad as textRatioAAAA largeAAAFix
Aaon white
3.71:1failpassfail
  • AA: use #058199 as the text (4.56:1)
  • AAA: use #045f72 as the text (7.28:1)
  • AA: or shift the background to #1c1c1c (4.59:1)
Aaon black
5.66:1passpassfail
  • AAA: use #06a6c6 as the text (7.28:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0591ad as the background.

Brands using this color

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

Palettes built around it

Fonts for this mood

#0591ad reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0591ad
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 #0591ad and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0591ad-a2b6be-df4e7c-1f252d-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