Color

#57637a

#57637a
hex#57637a
rgbrgb(87, 99, 122)
hslhsl(219, 17%, 41%)
oklchoklch(0.498 0.04 263.3)
Closest name: Admiral Blue (#50647f)Relative luminance 0.1236

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7a6e57

#57757a · #5c577a

#7a5763 · #637a57

Split-complementary

Open in tool →

#7a5c57 · #757a57

#7a5775 · #7a6e57 · #577a5c

Contrast

#57637a as textRatioAAAA largeAAAFix
Aaon white
6.05:1passpassfail
  • AAA: use #4c576b as the text (7.28:1)
Aaon black
3.47:1failpassfail
  • AA: use #687792 as the text (4.64:1)
  • AAA: use #8b96ac as the text (7.06:1)
  • AA: or shift the background to #e0e0e0 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #57637a as the background.

Brands using this color

mcpConnect your agent — build around #57637a
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 #57637a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/57637a-9ca5c4-df664e-211f2d-e9f0f1?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