Color

#15158a

#15158a
hex#15158a
rgbrgb(21, 21, 138)
hslhsl(240, 74%, 31%)
oklchoklch(0.312 0.181 269.4)
Closest name: Dramatic Blue (#240093)Relative luminance 0.0253

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8a8a15

#154f8a · #4f158a

#8a1515 · #158a15

Split-complementary

Open in tool →

#8a4f15 · #4f8a15

#8a154f · #8a8a15 · #158a4f

Contrast

#15158a as textRatioAAAA largeAAAFix
Aaon white
13.94:1passpasspassPasses AAA — no fix needed.
Aaon black
1.51:1failfailfail
  • AA: use #6464e8 as the text (4.53:1)
  • AAA: use #8c8cee as the text (7.1:1)
  • AA: or shift the background to #949494 (4.6:1)
  • AAA: or shift the background to #b8b8b8 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #15158a 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

#15158a reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #15158a
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 #15158a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/15158a-a19cc4-df994e-251f2d-e9edf1?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