Color

#10109d

#10109d
hex#10109d
rgbrgb(16, 16, 157)
hslhsl(240, 82%, 34%)
oklchoklch(0.33 0.207 267.2)
Closest name: Cobalt (#030aa7)Relative luminance 0.0292

Tints & shades

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

Harmonies

Complementary

Open in tool →

#9e9e10

#10579e · #57109e

#9e1010 · #109e10

Split-complementary

Open in tool →

#9e5710 · #579e10

#9e1057 · #9e9e10 · #109e57

Contrast

#10109d as textRatioAAAA largeAAAFix
Aaon white
13.27:1passpasspassPasses AAA — no fix needed.
Aaon black
1.58:1failfailfail
  • AA: use #6666f0 as the text (4.72:1)
  • AAA: use #8b8bf4 as the text (7.1:1)
  • AA: or shift the background to #999999 (4.66:1)
  • AAA: or shift the background to #bdbdbd (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #10109d 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

#10109d reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #10109d
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 #10109d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/10109d-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