Color

#215fa6

#215fa6
hex#215fa6
rgbrgb(33, 95, 166)
hslhsl(212, 67%, 39%)
oklchoklch(0.484 0.13 254.5)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1126

Colors that go with #215fa6

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 →

#a66821

#21a2a6 · #2521a6

#a6215f · #5fa621

Split-complementary

Open in tool →

#a62521 · #a2a621

#a621a2 · #a66821 · #21a625

Contrast

#215fa6 as textRatioAAAA largeAAAFix
Aaon white
6.46:1passpassfail
  • AAA: use #1e5899 as the text (7.21:1)
Aaon black
3.25:1failpassfail
  • AA: use #2875cc as the text (4.51:1)
  • AAA: use #5d9adf as the text (7.15:1)
  • AA: or shift the background to #d9d9d9 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #215fa6 as the background.

Brands using this color

Fonts for this mood

#215fa6 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #215fa6
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 #215fa6 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/215fa6-9caac4-df564e-1f202d-e9f1f1?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