Color

#101cf9

#101cf9
hex#101cf9
rgbrgb(16, 28, 249)
hslhsl(237, 95%, 52%)
oklchoklch(0.459 0.297 265.3)
Closest name: Bluebonnet (#1c1cf0)Relative luminance 0.0778

Tints & shades

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

Harmonies

Complementary

Open in tool →

#f9ed10

#1090f9 · #7910f9

#f9101c · #1cf910

Split-complementary

Open in tool →

#f97910 · #90f910

#f91090 · #f9ed10 · #10f979

Contrast

#101cf9 as textRatioAAAA largeAAAFix
Aaon white
8.22:1passpasspassPasses AAA — no fix needed.
Aaon black
2.56:1failfailfail
  • AA: use #5b63fb as the text (4.62:1)
  • AAA: use #888dfc as the text (7.26:1)
  • AA: or shift the background to #c2c2c2 (4.61:1)
  • AAA: or shift the background to #ededed (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #101cf9 as the background.

Brands using this color

Fonts for this mood

#101cf9 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #101cf9
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 #101cf9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/101cf9-9f9cc4-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