Color

#b1b3c3

#b1b3c3
hex#b1b3c3
rgbrgb(177, 179, 195)
hslhsl(233, 13%, 73%)
oklchoklch(0.77 0.023 280.2)
Closest name: Nebulous December (#b3b2bf)Relative luminance 0.4553

Tints & shades

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

Harmonies

Complementary

Open in tool →

#c3c1b1

#b1bcc3 · #b8b1c3

#c3b1b3 · #b3c3b1

Split-complementary

Open in tool →

#c3b8b1 · #bcc3b1

#c3b1bc · #c3c1b1 · #b1c3b8

Contrast

#b1b3c3 as textRatioAAAA largeAAAFix
Aaon white
2.08:1failfailfail
  • AA: use #6f7390 as the text (4.63:1)
  • AAA: use #54576d as the text (7.09:1)
  • AA: or shift the background to #454545 (4.61:1)
  • AAA: or shift the background to #292929 (7:1)
Aaon black
10.11:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b1b3c3 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#b1b3c3 reads as cool, muted, light. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b1b3c3
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 #b1b3c3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b1b3c3-9c9cc4-df884e-241f2d-e9eef1?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