Color

#15217f

#15217f
hex#15217f
rgbrgb(21, 33, 127)
hslhsl(233, 72%, 29%)
oklchoklch(0.316 0.156 268.7)
Closest name: Below the Surface (#0a2f7c)Relative luminance 0.0278

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7f7315

#15567f · #3e157f

#7f1521 · #217f15

Split-complementary

Open in tool →

#7f3e15 · #567f15

#7f1556 · #7f7315 · #157f3e

Contrast

#15217f as textRatioAAAA largeAAAFix
Aaon white
13.5:1passpasspassPasses AAA — no fix needed.
Aaon black
1.56:1failfailfail
  • AA: use #5869e4 as the text (4.56:1)
  • AAA: use #8490eb as the text (7.17:1)
  • AA: or shift the background to #969696 (4.56:1)
  • AAA: or shift the background to #bdbdbd (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #15217f as the background.

Brands using this color

Fonts for this mood

#15217f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #15217f
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 #15217f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/15217f-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