Color

#279ab4

#279ab4
hex#279ab4
rgbrgb(39, 154, 180)
hslhsl(191, 64%, 43%)
oklchoklch(0.636 0.104 217.1)
Closest name: Blue Ocean (#009dc4)Relative luminance 0.2684

Colors that go with #279ab4

Charcoal, Copper and Orange Red 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.

Real palettes that use #279ab4

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b44127

#27b487 · #2754b4

#b4279a · #9ab427

Split-complementary

Open in tool →

#b42754 · #b48727

#8727b4 · #b44127 · #54b427

Contrast

#279ab4 as textRatioAAAA largeAAAFix
Aaon white
3.3:1failpassfail
  • AA: use #218197 as the text (4.51:1)
  • AAA: use #196171 as the text (7.02:1)
  • AA: or shift the background to #262626 (4.59:1)
Aaon black
6.37:1passpassfail
  • 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 #279ab4 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

#279ab4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #279ab4
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 #279ab4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/279ab4-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