Color

#215eba

#215eba
hex#215eba
rgbrgb(33, 94, 186)
hslhsl(216, 70%, 43%)
oklchoklch(0.496 0.158 258.9)
Closest name: Denim (#1560bd)Relative luminance 0.1187

Colors that go with #215eba

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 →

#ba7d21

#21abba · #3021ba

#ba215e · #5eba21

Split-complementary

Open in tool →

#ba3021 · #abba21

#ba21ab · #ba7d21 · #21ba30

Contrast

#215eba as textRatioAAAA largeAAAFix
Aaon white
6.22:1passpassfail
  • AAA: use #1e56a9 as the text (7.1:1)
Aaon black
3.37:1failpassfail
  • AA: use #2f73da as the text (4.59:1)
  • AAA: use #6396e3 as the text (7:1)
  • AA: or shift the background to #dedede (4.63:1)

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

Brands using this color

Fonts for this mood

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

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

tool url/palettes/new/215eba-9ca7c4-df5f4e-201f2d-e9f0f1?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