Color

#211528

#211528
hex#211528
rgbrgb(33, 21, 40)
hslhsl(278, 31%, 12%)
oklchoklch(0.221 0.04 312.4)
Closest name: Violet Void (#1a161d)Relative luminance 0.0101

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1c2815

#181528 · #281526

#282115 · #152821

Split-complementary

Open in tool →

#262815 · #152818

#281815 · #1c2815 · #152628

Contrast

#211528 as textRatioAAAA largeAAAFix
Aaon white
17.46:1passpasspassPasses AAA — no fix needed.
Aaon black
1.2:1failfailfail
  • AA: use #9162ac as the text (4.55:1)
  • AAA: use #ad8ac1 as the text (7.18:1)
  • AA: or shift the background to #828282 (4.54:1)
  • AAA: or shift the background to #a6a6a6 (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #211528 as the background.

Brands using this color

Fonts for this mood

#211528 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #211528
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 #211528 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/211528-ba9cc4-bbcb62-2d1f2c-ebe9f1?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