Color

#2d4ef0

#2d4ef0
hex#2d4ef0
rgbrgb(45, 78, 240)
hslhsl(230, 87%, 56%)
oklchoklch(0.516 0.243 267.2)
Closest name: C64 Blue (#003aff)Relative luminance 0.123

Colors that go with #2d4ef0

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 →

#f0d02d

#2daff0 · #6e2df0

#f02d4e · #4ef02d

Split-complementary

Open in tool →

#f06e2d · #aff02d

#f02daf · #f0d02d · #2df06e

Contrast

#2d4ef0 as textRatioAAAA largeAAAFix
Aaon white
6.07:1passpassfail
  • AAA: use #1a3eef as the text (7.05:1)
Aaon black
3.46:1failpassfail
  • AA: use #4f6af3 as the text (4.69:1)
  • AAA: use #798ef6 as the text (7.01:1)
  • AA: or shift the background to #dedede (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 #2d4ef0 as the background.

Brands using this color

Fonts for this mood

#2d4ef0 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2d4ef0
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 #2d4ef0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2d4ef0-9c9ec4-df814e-231f2d-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