Color

#03b5d8

#03b5d8
hex#03b5d8
rgbrgb(3, 181, 216)
hslhsl(190, 97%, 43%)
oklchoklch(0.714 0.128 218.3)
Closest name: Aquarius (#2db0ce)Relative luminance 0.3802

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d82703

#03d891 · #034ad8

#d803b5 · #b5d803

Split-complementary

Open in tool →

#d8034a · #d89103

#9103d8 · #d82703 · #4ad803

Contrast

#03b5d8 as textRatioAAAA largeAAAFix
Aaon white
2.44:1failfailfail
  • AA: use #027e97 as the text (4.74:1)
  • AAA: use #026174 as the text (7.08:1)
  • AA: or shift the background to #3b3b3b (4.59:1)
  • AAA: or shift the background to #1a1a1a (7.13:1)
Aaon black
8.6:1passpasspassPasses 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 #03b5d8 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#03b5d8 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #03b5d8
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 #03b5d8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/03b5d8-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