Color

#289eb8

#289eb8
hex#289eb8
rgbrgb(40, 158, 184)
hslhsl(191, 64%, 44%)
oklchoklch(0.648 0.106 216.6)
Closest name: Blue Ocean (#009dc4)Relative luminance 0.2837

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b84328

#28b88b · #2856b8

#b8289e · #9eb828

Split-complementary

Open in tool →

#b82856 · #b88b28

#8b28b8 · #b84328 · #56b828

Contrast

#289eb8 as textRatioAAAA largeAAAFix
Aaon white
3.15:1failpassfail
  • AA: use #218197 as the text (4.51:1)
  • AAA: use #196171 as the text (7.02:1)
  • AA: or shift the background to #292929 (4.62:1)
Aaon black
6.67:1passpassfail
  • AAA: use #2aa5c0 as the text (7.24:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #289eb8 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

#289eb8 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #289eb8
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 #289eb8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/289eb8-a2b6be-df4e7a-1f252d-e9f1ef?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