Color

#15499d

#15499d
hex#15499d
rgbrgb(21, 73, 157)
hslhsl(217, 76%, 35%)
oklchoklch(0.424 0.147 260)
Closest name: Cascade Twilight (#234893)Relative luminance 0.0736

Tints & shades

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

Harmonies

Complementary

Open in tool →

#9d6915

#158d9d · #25159d

#9d1549 · #499d15

Split-complementary

Open in tool →

#9d2515 · #8d9d15

#9d158d · #9d6915 · #159d25

Contrast

#15499d as textRatioAAAA largeAAAFix
Aaon white
8.5:1passpasspassPasses AAA — no fix needed.
Aaon black
2.47:1failfailfail
  • AA: use #2c72e2 as the text (4.61:1)
  • AAA: use #6296ea as the text (7.07:1)
  • AA: or shift the background to #bdbdbd (4.52:1)
  • AAA: or shift the background to #ebebeb (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #15499d 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

#15499d reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #15499d
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 #15499d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/15499d-9ca7c4-df624e-201f2d-e9f0f1?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