Color

#103fcb

#103fcb
hex#103fcb
rgbrgb(16, 63, 203)
hslhsl(225, 85%, 43%)
oklchoklch(0.446 0.22 264.2)
Closest name: Denim (#2243b6)Relative luminance 0.0798

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cb9c10

#109ccb · #3f10cb

#cb103f · #3fcb10

Split-complementary

Open in tool →

#cb3f10 · #9ccb10

#cb109c · #cb9c10 · #10cb3f

Contrast

#103fcb as textRatioAAAA largeAAAFix
Aaon white
8.09:1passpasspassPasses AAA — no fix needed.
Aaon black
2.6:1failfailfail
  • AA: use #3e6aef as the text (4.51:1)
  • AAA: use #7192f4 as the text (7.12:1)
  • AA: or shift the background to #c2c2c2 (4.54:1)
  • AAA: or shift the background to #f0f0f0 (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #103fcb as the background.

Brands using this color

Fonts for this mood

#103fcb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #103fcb
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 #103fcb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/103fcb-9ca1c4-df754e-221f2d-e9eff1?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