Color

#2b212b

#2b212b
hex#2b212b
rgbrgb(43, 33, 43)
hslhsl(300, 13%, 15%)
oklchoklch(0.264 0.023 326.2)
Closest name: Black Velvet (#222233)Relative luminance 0.0178

Tints & shades

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

Harmonies

Complementary

Open in tool →

#212b21

#26212b · #2b2126

#2b2b21 · #212b2b

Split-complementary

Open in tool →

#262b21 · #212b26

#2b2621 · #212b21 · #21262b

Contrast

#2b212b as textRatioAAAA largeAAAFix
Aaon white
15.5:1passpasspassPasses AAA — no fix needed.
Aaon black
1.36:1failfailfail
  • AA: use #8a6a8a as the text (4.51:1)
  • AAA: use #a88fa8 as the text (7.16:1)
  • AA: or shift the background to #8c8c8c (4.61:1)
  • AAA: or shift the background to #b0b0b0 (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2b212b as the background.

Brands using this color

Fonts for this mood

#2b212b reads as warm, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2b212b
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 #2b212b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2b212b-c19fbd-95cb62-2d1f27-ede9f1?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