Color

#171efd

#171efd
hex#171efd
rgbrgb(23, 30, 253)
hslhsl(238, 98%, 54%)
oklchoklch(0.467 0.299 265.9)
Closest name: Bluebonnet (#1c1cf0)Relative luminance 0.082

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fdf517

#1791fd · #8217fd

#fd171e · #1efd17

Split-complementary

Open in tool →

#fd8217 · #91fd17

#fd1791 · #fdf517 · #17fd82

Contrast

#171efd as textRatioAAAA largeAAAFix
Aaon white
7.95:1passpasspassPasses AAA — no fix needed.
Aaon black
2.64:1failfailfail
  • AA: use #5d63fd as the text (4.67:1)
  • AAA: use #868afe as the text (7.08:1)
  • AA: or shift the background to #c4c4c4 (4.56:1)
  • AAA: or shift the background to #f2f2f2 (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 #171efd as the background.

Brands using this color

Fonts for this mood

#171efd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #171efd
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 #171efd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/171efd-9f9cc4-df944e-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