Color

#21076e

#21076e
hex#21076e
rgbrgb(33, 7, 110)
hslhsl(255, 88%, 23%)
oklchoklch(0.271 0.154 280.2)
Closest name: Child of the Night (#220077)Relative luminance 0.016

Tints & shades

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

Harmonies

Complementary

Open in tool →

#546e07

#07216e · #54076e

#6e2107 · #076e21

Split-complementary

Open in tool →

#6e5407 · #216e07

#6e0721 · #546e07 · #076e54

Contrast

#21076e as textRatioAAAA largeAAAFix
Aaon white
15.91:1passpasspassPasses AAA — no fix needed.
Aaon black
1.32:1failfailfail
  • AA: use #7e57f4 as the text (4.56:1)
  • AAA: use #a082f7 as the text (7.03:1)
  • AA: or shift the background to #8a8a8a (4.61:1)
  • AAA: or shift the background to #adadad (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #21076e 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

#21076e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #21076e
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 #21076e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/21076e-ab9cc4-dfbd4e-291f2d-e9ebf1?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