brandsweets

Color

#42657b

#42657b
hex#42657b
rgbrgb(66, 101, 123)
hslhsl(203, 30%, 37%)
oklchoklch(0.489 0.054 237)
Closest name: Admiral Blue (#50647f)Relative luminance 0.119
CoolMuted
Open in palette toolCheck contrast

Tints & shades

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

Harmonies

Complementary

Open in tool →
42657b7b5842

#7b5842

Analogous

Open in tool →
42657b427b7442497b

#427b74 · #42497b

Triadic

Open in tool →
42657b7b4265657b42

#7b4265 · #657b42

Split-complementary

Open in tool →
42657b7b42497b7442

#7b4249 · #7b7442

Tetradic

Open in tool →
42657b74427b7b5842497b42

#74427b · #7b5842 · #497b42

Contrast

#42657b as textRatioAAAA largeAAAFix
Aaon white
6.21:1passpassfail
  • AAA: use #3b5a6d as the text (7.32:1)
Aaon black
3.38:1failpassfail
  • AA: use #507b95 as the text (4.61:1)
  • AAA: use #749bb4 as the text (7.09:1)
  • AA: or shift the background to #dedede (4.62:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #42657b as the background.

Brands using this color

mcpConnect your agent — build around #42657b
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 #42657b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/42657b-9cb0c4-df4e5d-1f222d-e9f1f0?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