Color

#538ab2

#538ab2
hex#538ab2
rgbrgb(83, 138, 178)
hslhsl(205, 38%, 51%)
oklchoklch(0.612 0.084 241.5)
Closest name: steelblue (#4682b4)Relative luminance 0.2323

Colors that go with #538ab2

Charcoal, Copper 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.

Real palettes that use #538ab2

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b27a53

#53b2aa · #535ab2

#b2538a · #8ab253

Split-complementary

Open in tool →

#b2535a · #b2aa53

#aa53b2 · #b27a53 · #5ab253

Contrast

#538ab2 as textRatioAAAA largeAAAFix
Aaon white
3.72:1failpassfail
  • AA: use #477a9e as the text (4.62:1)
  • AAA: use #365c78 as the text (7.1:1)
  • AA: or shift the background to #1c1c1c (4.58:1)
Aaon black
5.65:1passpassfail
  • AAA: use #6b9bbd as the text (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #538ab2 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

#538ab2 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #538ab2
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 #538ab2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/538ab2-9cafc4-df4e58-1f212d-e9f1f0?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