Color

#215de8

#215de8
hex#215de8
rgbrgb(33, 93, 232)
hslhsl(222, 81%, 52%)
oklchoklch(0.531 0.219 263.2)
Closest name: Bluetiful (#3c69e7)Relative luminance 0.1398

Colors that go with #215de8

Charcoal, Crimson and Amber lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#e8ac21

#21c0e8 · #4921e8

#e8215d · #5de821

Split-complementary

Open in tool →

#e84921 · #c0e821

#e821c0 · #e8ac21 · #21e849

Contrast

#215de8 as textRatioAAAA largeAAAFix
Aaon white
5.53:1passpassfail
  • AAA: use #154ccb as the text (7.17:1)
Aaon black
3.8:1failpassfail
  • AA: use #396eea as the text (4.59:1)
  • AAA: use #6b93ef as the text (7.05:1)
  • AA: or shift the background to #e8e8e8 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #215de8 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#215de8 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #215de8
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #215de8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/215de8-9ca3c4-df6e4e-211f2d-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