Color

#2878c8

#2878c8
hex#2878c8
rgbrgb(40, 120, 200)
hslhsl(210, 67%, 47%)
oklchoklch(0.566 0.145 252.1)
Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.1805

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#c87828

#28c8c8 · #2828c8

#c82878 · #78c828

Split-complementary

Open in tool →

#c82828 · #c8c828

#c828c8 · #c87828 · #28c828

Contrast

#2878c8 as textRatioAAAA largeAAAFix
Aaon white
4.55:1passpassfail
  • AAA: use #1d5995 as the text (7.2:1)
Aaon black
4.61:1passpassfail
  • AAA: use #599cde as the text (7.23:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2878c8 as the background.

Brands using this color

Fonts for this mood

#2878c8 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2878c8
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #2878c8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2878c8-9cabc4-df514e-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