Color

#308b97

#308b97
hex#308b97
rgbrgb(48, 139, 151)
hslhsl(187, 52%, 39%)
oklchoklch(0.589 0.085 207.5)
Closest name: darkcyan (#008b8b)Relative luminance 0.2133

Tints & shades

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

Harmonies

Complementary

Open in tool →

#973c30

#309770 · #305797

#97308b · #8b9730

Split-complementary

Open in tool →

#973057 · #977030

#703097 · #973c30 · #579730

Contrast

#308b97 as textRatioAAAA largeAAAFix
Aaon white
3.99:1failpassfail
  • AA: use #2c808c as the text (4.59:1)
  • AAA: use #216069 as the text (7.14:1)
  • AA: or shift the background to #141414 (4.62:1)
Aaon black
5.27:1passpassfail
  • AAA: use #38a4b2 as the text (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #308b97 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

#308b97 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #308b97
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 #308b97 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/308b97-a2b8be-df4e83-1f262d-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