Color

#658ba4

#658ba4
hex#658ba4
rgbrgb(101, 139, 164)
hslhsl(204, 26%, 52%)
oklchoklch(0.618 0.057 237.7)
Closest name: lightslategray (#778899)Relative luminance 0.2391

Colors that go with #658ba4

Charcoal, Copper and Cobalt Blue 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 →

#a47e65

#65a49e · #656ba4

#a4658b · #8ba465

Split-complementary

Open in tool →

#a4656b · #a49e65

#9e65a4 · #a47e65 · #6ba465

Contrast

#658ba4 as textRatioAAAA largeAAAFix
Aaon white
3.63:1failpassfail
  • AA: use #577b94 as the text (4.5:1)
  • AAA: use #405b6d as the text (7.15:1)
  • AA: or shift the background to #1f1f1f (4.54:1)
Aaon black
5.78:1passpassfail
  • AAA: use #7b9cb2 as the text (7.24:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #658ba4 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 #658ba4
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 #658ba4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/658ba4-9cafc4-df4e5a-1f222d-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