Color

#5b656b

#5b656b
hex#5b656b
rgbrgb(91, 101, 107)
hslhsl(203, 8%, 39%)
oklchoklch(0.5 0.016 234)
Closest name: Concrete Landscape (#5c606e)Relative luminance 0.1259

Tints & shades

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

Harmonies

Complementary

Open in tool →

#6b625b

#5b6b6a · #5b5d6b

#6b5b65 · #656b5b

Split-complementary

Open in tool →

#6b5b5d · #6b6a5b

#6a5b6b · #6b625b · #5d6b5b

Contrast

#5b656b as textRatioAAAA largeAAAFix
Aaon white
5.97:1passpassfail
  • AAA: use #50585e as the text (7.24:1)
Aaon black
3.52:1failpassfail
  • AA: use #6c777f as the text (4.58:1)
  • AAA: use #8e989f as the text (7.14:1)
  • AA: or shift the background to #e0e0e0 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5b656b as the background.

Brands using this color

Fonts for this mood

#5b656b reads as muted, minimal. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5b656b
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 #5b656b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5b656b-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