Color

#508cb9

#508cb9
hex#508cb9
rgbrgb(80, 140, 185)
hslhsl(206, 43%, 52%)
oklchoklch(0.618 0.093 242.7)
Closest name: steelblue (#4682b4)Relative luminance 0.2396

Colors that go with #508cb9

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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b97e50

#50b9b2 · #5057b9

#b9508c · #8cb950

Split-complementary

Open in tool →

#b95057 · #b9b250

#b250b9 · #b97e50 · #57b950

Contrast

#508cb9 as textRatioAAAA largeAAAFix
Aaon white
3.63:1failpassfail
  • AA: use #4179a4 as the text (4.67:1)
  • AAA: use #315c7c as the text (7.11:1)
  • AA: or shift the background to #1f1f1f (4.55:1)
Aaon black
5.79:1passpassfail
  • AAA: use #699cc3 as the text (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #508cb9 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

#508cb9 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #508cb9
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 #508cb9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/508cb9-9caec4-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