Color

#2879dc

#2879dc
hex#2879dc
rgbrgb(40, 121, 220)
hslhsl(213, 72%, 51%)
oklchoklch(0.581 0.17 255.9)
Closest name: royalblue (#4169e1)Relative luminance 0.1929

Tints & shades

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

Harmonies

Complementary

Open in tool →

#dc8b28

#28d3dc · #3128dc

#dc2879 · #79dc28

Split-complementary

Open in tool →

#dc3128 · #d3dc28

#dc28d3 · #dc8b28 · #28dc31

Contrast

#2879dc as textRatioAAAA largeAAAFix
Aaon white
4.32:1failpassfail
  • AA: use #2374d7 as the text (4.61:1)
  • AAA: use #1a58a2 as the text (7.09:1)
  • AA: or shift the background to #0a0a0a (4.58:1)
Aaon black
4.86:1passpassfail
  • AAA: use #5d9ae5 as the text (7.22:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2879dc as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#2879dc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2879dc
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 #2879dc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2879dc-9ca9c4-df584e-1f202d-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