Color

#15037c

#15037c
hex#15037c
rgbrgb(21, 3, 124)
hslhsl(249, 95%, 25%)
oklchoklch(0.277 0.176 271.3)
Closest name: Child of the Night (#220077)Relative luminance 0.0168

Tints & shades

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

Harmonies

Complementary

Open in tool →

#6a7c03

#032e7c · #52037c

#7c1503 · #037c15

Split-complementary

Open in tool →

#7c5203 · #2e7c03

#7c032e · #6a7c03 · #037c52

Contrast

#15037c as textRatioAAAA largeAAAFix
Aaon white
15.72:1passpasspassPasses AAA — no fix needed.
Aaon black
1.34:1failfailfail
  • AA: use #735bfb as the text (4.62:1)
  • AAA: use #9988fc as the text (7.28:1)
  • AA: or shift the background to #8a8a8a (4.55:1)
  • AAA: or shift the background to #adadad (7:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #15037c 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

#15037c reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #15037c
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 #15037c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/15037c-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