Color

#31bcd8

#31bcd8
hex#31bcd8
rgbrgb(49, 188, 216)
hslhsl(190, 68%, 52%)
oklchoklch(0.736 0.119 214.9)
Closest name: Blue Martini (#52b4d3)Relative luminance 0.4158

Colors that go with #31bcd8

Charcoal, Dark Orange and Denim 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d84d31

#31d8a0 · #3169d8

#d831bc · #bcd831

Split-complementary

Open in tool →

#d83169 · #d8a031

#a031d8 · #d84d31 · #69d831

Contrast

#31bcd8 as textRatioAAAA largeAAAFix
Aaon white
2.25:1failfailfail
  • AA: use #1c7e92 as the text (4.72:1)
  • AAA: use #15606f as the text (7.16:1)
  • AA: or shift the background to #404040 (4.6:1)
  • AAA: or shift the background to #212121 (7.14:1)
Aaon black
9.32:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #31bcd8 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

#31bcd8 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #31bcd8
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 #31bcd8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/31bcd8-a2b6be-df4e7c-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