Color

#25d4ef

#25d4ef
hex#25d4ef
rgbrgb(37, 212, 239)
hslhsl(188, 86%, 54%)
oklchoklch(0.8 0.134 211.5)
Closest name: darkturquoise (#00ced1)Relative luminance 0.5371

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ef4025

#25efa5 · #256fef

#ef25d4 · #d4ef25

Split-complementary

Open in tool →

#ef256f · #efa525

#a525ef · #ef4025 · #6fef25

Contrast

#25d4ef as textRatioAAAA largeAAAFix
Aaon white
1.79:1failfailfail
  • AA: use #0b8193 as the text (4.59:1)
  • AAA: use #08606d as the text (7.23:1)
  • AA: or shift the background to #4f4f4f (4.58:1)
  • AAA: or shift the background to #333333 (7.06:1)
Aaon black
11.74:1passpasspassPasses 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 #25d4ef as the background.

Brands using this color

Fonts for this mood

#25d4ef reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #25d4ef
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 #25d4ef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/25d4ef-a2b7be-df4e81-1f252d-e9f1ee?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