Color

#215bfd

#215bfd
hex#215bfd
rgbrgb(33, 91, 253)
hslhsl(224, 98%, 56%)
oklchoklch(0.546 0.247 264.2)
Closest name: Blue Ribbon (#0066ff)Relative luminance 0.149

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fdc221

#21c9fd · #5421fd

#fd215b · #5bfd21

Split-complementary

Open in tool →

#fd5421 · #c9fd21

#fd21c9 · #fdc221 · #21fd54

Contrast

#215bfd as textRatioAAAA largeAAAFix
Aaon white
5.28:1passpassfail
  • AAA: use #0241ed as the text (7.04:1)
Aaon black
3.98:1failpassfail
  • AA: use #356afd as the text (4.63:1)
  • AAA: use #6d93fe as the text (7.25:1)
  • AA: or shift the background to #ededed (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #215bfd as the background.

Brands using this color

Fonts for this mood

#215bfd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #215bfd
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 #215bfd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/215bfd-9ca2c4-df724e-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