Color

#2837e2

#2837e2
hex#2837e2
rgbrgb(40, 55, 226)
hslhsl(235, 76%, 52%)
oklchoklch(0.466 0.25 268.4)
Closest name: Bluebonnet (#1c1cf0)Relative luminance 0.0867

Colors that go with #2837e2

Charcoal, Sea Green 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 →

#e2d228

#2894e2 · #7528e2

#e22837 · #37e228

Split-complementary

Open in tool →

#e27528 · #94e228

#e22894 · #e2d228 · #28e275

Contrast

#2837e2 as textRatioAAAA largeAAAFix
Aaon white
7.68:1passpasspassPasses AAA — no fix needed.
Aaon black
2.73:1failfailfail
  • AA: use #5d69e9 as the text (4.66:1)
  • AAA: use #868fee as the text (7.18:1)
  • AA: or shift the background to #c7c7c7 (4.54:1)
  • AAA: or shift the background to #f5f5f5 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2837e2 as the background.

Brands using this color

Fonts for this mood

#2837e2 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2837e2
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 #2837e2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2837e2-9e9cc4-df8d4e-241f2d-e9eef1?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