Color

#21117e

#21117e
hex#21117e
rgbrgb(33, 17, 126)
hslhsl(249, 76%, 28%)
oklchoklch(0.3 0.166 276.2)
Closest name: Child of the Night (#220077)Relative luminance 0.0223

Tints & shades

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

Harmonies

Complementary

Open in tool →

#6d7e11

#11377e · #58117e

#7e2111 · #117e21

Split-complementary

Open in tool →

#7e5811 · #377e11

#7e1137 · #6d7e11 · #117e58

Contrast

#21117e as textRatioAAAA largeAAAFix
Aaon white
14.52:1passpasspassPasses AAA — no fix needed.
Aaon black
1.45:1failfailfail
  • AA: use #7662ea as the text (4.71:1)
  • AAA: use #998aef as the text (7.24:1)
  • AA: or shift the background to #919191 (4.61:1)
  • AAA: or shift the background to #b5b5b5 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #21117e as the background.

Brands using this color

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

Fonts for this mood

#21117e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #21117e
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 #21117e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/21117e-a79cc4-dfae4e-271f2d-e9ecf1?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