Color

#100acd

#100acd
hex#100acd
rgbrgb(16, 10, 205)
hslhsl(242, 91%, 42%)
oklchoklch(0.391 0.26 265.9)
Closest name: mediumblue (#0000cd)Relative luminance 0.0474

Tints & shades

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

Harmonies

Complementary

Open in tool →

#c6cd0a

#0a65cd · #720acd

#cd100a · #0acd10

Split-complementary

Open in tool →

#cd720a · #65cd0a

#cd0a65 · #c6cd0a · #0acd72

Contrast

#100acd as textRatioAAAA largeAAAFix
Aaon white
10.79:1passpasspassPasses AAA — no fix needed.
Aaon black
1.95:1failfailfail
  • AA: use #6863f8 as the text (4.73:1)
  • AAA: use #8e8af9 as the text (7.15:1)
  • AA: or shift the background to #a8a8a8 (4.54:1)
  • AAA: or shift the background to #d1d1d1 (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 #100acd as the background.

Brands using this color

Fonts for this mood

#100acd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #100acd
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 #100acd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/100acd-a29cc4-df9e4e-261f2d-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