brandsweets

Color

#515b67

#515b67
hex#515b67
rgbrgb(81, 91, 103)
hslhsl(213, 12%, 36%)
oklchoklch(0.467 0.023 253)
Closest name: Blackwater (#545663)Relative luminance 0.1021
CoolMuted
Open in palette toolCheck contrast

Tints & shades

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

Harmonies

Complementary

Open in tool →
515b67675d51

#675d51

Analogous

Open in tool →
515b67516667525167

#516667 · #525167

Triadic

Open in tool →
515b6767515b5b6751

#67515b · #5b6751

Split-complementary

Open in tool →
515b67675251666751

#675251 · #666751

Tetradic

Open in tool →
515b67675166675d51516752

#675166 · #675d51 · #516752

Contrast

#515b67 as textRatioAAAA largeAAAFix
Aaon white
6.9:1passpassfail
  • AAA: use #4f5864 as the text (7.21:1)
Aaon black
3.04:1failpassfail
  • AA: use #697686 as the text (4.54:1)
  • AAA: use #8d98a5 as the text (7.17:1)
  • AA: or shift the background to #d1d1d1 (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 #515b67 as the background.

Brands using this color

mcpConnect your agent — build around #515b67
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 #515b67 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/515b67-9ca9c4-df584e-1f202d-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