Color

#279ddd

#279ddd
hex#279ddd
rgbrgb(39, 157, 221)
hslhsl(201, 73%, 51%)
oklchoklch(0.663 0.137 238.8)
Closest name: Blue Burst (#309cd0)Relative luminance 0.2977

Tints & shades

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

Harmonies

Complementary

Open in tool →

#dd6727

#27ddc2 · #2742dd

#dd279d · #9ddd27

Split-complementary

Open in tool →

#dd2742 · #ddc227

#c227dd · #dd6727 · #42dd27

Contrast

#279ddd as textRatioAAAA largeAAAFix
Aaon white
3.02:1failpassfail
  • AA: use #1c7cb0 as the text (4.61:1)
  • AAA: use #155d84 as the text (7.17:1)
  • AA: or shift the background to #2b2b2b (4.69:1)
Aaon black
6.95:1passpassfail
  • AAA: use #2b9fde as the text (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #279ddd 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

#279ddd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #279ddd
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 #279ddd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/279ddd-9cb1c4-df4e62-1f222d-e9f1f0?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