Color

#618da8

#618da8
hex#618da8
rgbrgb(97, 141, 168)
hslhsl(203, 29%, 52%)
oklchoklch(0.622 0.063 236.1)
Closest name: lightslategray (#778899)Relative luminance 0.2442

Colors that go with #618da8

Charcoal, Copper and Denim 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 #618da8

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a87c61

#61a8a0 · #6169a8

#a8618d · #8da861

Split-complementary

Open in tool →

#a86169 · #a8a061

#a061a8 · #a87c61 · #69a861

Contrast

#618da8 as textRatioAAAA largeAAAFix
Aaon white
3.57:1failpassfail
  • AA: use #517b94 as the text (4.55:1)
  • AAA: use #3c5a6d as the text (7.3:1)
  • AA: or shift the background to #212121 (4.51:1)
Aaon black
5.88:1passpassfail
  • AAA: use #759bb3 as the text (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #618da8 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 #618da8
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 #618da8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/618da8-9cb0c4-df4e5d-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