Color

#737f8c

#737f8c
hex#737f8c
rgbrgb(115, 127, 140)
hslhsl(211, 10%, 50%)
oklchoklch(0.591 0.024 250.4)
Closest name: slategray (#708090)Relative luminance 0.2072

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8c8073

#738c8c · #73738c

#8c737f · #7f8c73

Split-complementary

Open in tool →

#8c7373 · #8c8c73

#8c738c · #8c8073 · #738c73

Contrast

#737f8c as textRatioAAAA largeAAAFix
Aaon white
4.08:1failpassfail
  • AA: use #6c7784 as the text (4.56:1)
  • AAA: use #505962 as the text (7.13:1)
  • AA: or shift the background to #141414 (4.51:1)
Aaon black
5.14:1passpassfail
  • AAA: use #8f99a3 as the text (7.25:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #737f8c 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 #737f8c
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 #737f8c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/737f8c-9cabc4-df534e-1f202d-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