Color

#256db1

#256db1
hex#256db1
rgbrgb(37, 109, 177)
hslhsl(209, 65%, 42%)
oklchoklch(0.525 0.128 250.7)
Closest name: Campanula (#3473b7)Relative luminance 0.145

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b16925

#25b1ae · #2528b1

#b1256d · #6db125

Split-complementary

Open in tool →

#b12528 · #b1ae25

#ae25b1 · #b16925 · #28b125

Contrast

#256db1 as textRatioAAAA largeAAAFix
Aaon white
5.38:1passpassfail
  • AAA: use #1f5b93 as the text (7.06:1)
Aaon black
3.9:1failpassfail
  • AA: use #2978c2 as the text (4.56:1)
  • AAA: use #579bdb as the text (7.12:1)
  • AA: or shift the background to #ebebeb (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #256db1 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

#256db1 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #256db1
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 #256db1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/256db1-9cacc4-df4e4e-1f212d-e9f1f1?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