Color

#3a5983

#3a5983
hex#3a5983
rgbrgb(58, 89, 131)
hslhsl(215, 39%, 37%)
oklchoklch(0.459 0.078 256.3)
Closest name: Deep Indigo (#4c567a)Relative luminance 0.0968

Tints & shades

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

Harmonies

Complementary

Open in tool →

#83643a

#3a7d83 · #403a83

#833a58 · #58833a

Split-complementary

Open in tool →

#83403a · #7d833a

#833a7d · #83643a · #3a8340

Contrast

#3a5983 as textRatioAAAA largeAAAFix
Aaon white
7.15:1passpasspassPasses AAA — no fix needed.
Aaon black
2.94:1failfailfail
  • AA: use #4e77b1 as the text (4.6:1)
  • AAA: use #7898c4 as the text (7.09:1)
  • AA: or shift the background to #cfcfcf (4.59:1)
  • AAA: or shift the background to #ffffff (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3a5983 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

#3a5983 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3a5983
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 #3a5983 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3a5983-9ca8c4-df5d4e-201f2d-e9f0f1?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