brandsweets

Color

#397f89

#397f89
hex#397f89
rgbrgb(57, 127, 137)
hslhsl(188, 41%, 38%)
oklchoklch(0.556 0.071 207.9)
Closest name: Bermuda (#1b7d8d)Relative luminance 0.1785
CoolModern
Open in palette toolCheck contrast

Tints & shades

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

Harmonies

Complementary

Open in tool →
397f89894439

#894439

Analogous

Open in tool →
397f8939896b395689

#39896b · #395689

Triadic

Open in tool →
397f8989397e7e8939

#89397e · #7e8939

Split-complementary

Open in tool →
397f89893956896b39

#893956 · #896b39

Tetradic

Open in tool →
397f896b3989894439568939

#6b3989 · #894439 · #568939

Contrast

#397f89 as textRatioAAAA largeAAAFix
Aaon white
4.59:1passpassfail
  • AAA: use #2c6068 as the text (7.05:1)
Aaon black
4.57:1passpassfail
  • AAA: use #4aa3b0 as the text (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #397f89 as the background.

Brands using this color

Fonts for this mood

#397f89 reads as cool, modern. The font library is tagged with the same vocabulary:

Modern fonts →
mcpConnect your agent — build around #397f89
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 #397f89 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/397f89-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