Color

#2870dc

#2870dc
hex#2870dc
rgbrgb(40, 112, 220)
hslhsl(216, 72%, 51%)
oklchoklch(0.562 0.18 258.9)
Closest name: Royal Blue (#4169e1)Relative luminance 0.1721

Colors that go with #2870dc

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 →

#dc9428

#28cadc · #3a28dc

#dc2870 · #70dc28

Split-complementary

Open in tool →

#dc3a28 · #cadc28

#dc28ca · #dc9428 · #28dc3a

Contrast

#2870dc as textRatioAAAA largeAAAFix
Aaon white
4.73:1passpassfail
  • AAA: use #1c55ab as the text (7.15:1)
Aaon black
4.44:1failpassfail
  • AA: use #2c73dd as the text (4.6:1)
  • AAA: use #6196e5 as the text (7:1)
  • AA: or shift the background to #fafafa (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2870dc as the background.

Brands using this color

Fonts for this mood

#2870dc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2870dc
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 #2870dc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2870dc-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