Color

#101cfe

#101cfe
hex#101cfe
rgbrgb(16, 28, 254)
hslhsl(237, 99%, 53%)
oklchoklch(0.465 0.302 265.2)
Closest name: blue (#0000ff)Relative luminance 0.081

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fef210

#1093fe · #7b10fe

#fe101c · #1cfe10

Split-complementary

Open in tool →

#fe7b10 · #93fe10

#fe1093 · #fef210 · #10fe7b

Contrast

#101cfe as textRatioAAAA largeAAAFix
Aaon white
8.02:1passpasspassPasses AAA — no fix needed.
Aaon black
2.62:1failfailfail
  • AA: use #5860fe as the text (4.52:1)
  • AAA: use #858bfe as the text (7.12:1)
  • AA: or shift the background to #c2c2c2 (4.5:1)
  • AAA: or shift the background to #f0f0f0 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #101cfe as the background.

Brands using this color

Fonts for this mood

#101cfe reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #101cfe
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 #101cfe and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/101cfe-9f9cc4-df924e-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