Color

#15217a

#15217a
hex#15217a
rgbrgb(21, 33, 122)
hslhsl(233, 71%, 28%)
oklchoklch(0.31 0.149 268.9)
Closest name: midnightblue (#191970)Relative luminance 0.0265

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7a6e15

#15537a · #3c157a

#7a1521 · #217a15

Split-complementary

Open in tool →

#7a3c15 · #537a15

#7a1553 · #7a6e15 · #157a3c

Contrast

#15217a as textRatioAAAA largeAAAFix
Aaon white
13.72:1passpasspassPasses AAA — no fix needed.
Aaon black
1.53:1failfailfail
  • AA: use #5969e3 as the text (4.55:1)
  • AAA: use #8591ea as the text (7.24:1)
  • AA: or shift the background to #949494 (4.52:1)
  • AAA: or shift the background to #bababa (7.07:1)

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

Brands using this color

Fonts for this mood

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

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

tool url/palettes/new/15217a-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