Color

#646170

#646170
hex#646170
rgbrgb(100, 97, 112)
hslhsl(252, 7%, 41%)
oklchoklch(0.501 0.024 294.7)
Closest name: Concrete Landscape (#5c606e)Relative luminance 0.1243

Tints & shades

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

Harmonies

Complementary

Open in tool →

#6d7061

#616670 · #6b6170

#706461 · #617064

Split-complementary

Open in tool →

#706b61 · #667061

#706166 · #6d7061 · #61706b

Contrast

#646170 as textRatioAAAA largeAAAFix
Aaon white
6.02:1passpassfail
  • AAA: use #585562 as the text (7.26:1)
Aaon black
3.49:1failpassfail
  • AA: use #787486 as the text (4.64:1)
  • AAA: use #9795a3 as the text (7.14:1)
  • AA: or shift the background to #e0e0e0 (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #646170 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

#646170 reads as neutral, minimal. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #646170
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #646170 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/646170-a2beb0-c859d4-1f2d2b-eaf1e9?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