Color

#303145

#303145
hex#303145
rgbrgb(48, 49, 69)
hslhsl(237, 18%, 23%)
oklchoklch(0.321 0.036 282)
Closest name: Blue Whale (#1e3442)Relative luminance 0.0325

Tints & shades

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

Harmonies

Complementary

Open in tool →

#454430

#303c45 · #3a3045

#453031 · #314530

Split-complementary

Open in tool →

#453a30 · #3c4530

#45303c · #454430 · #30453a

Contrast

#303145 as textRatioAAAA largeAAAFix
Aaon white
12.72:1passpasspassPasses AAA — no fix needed.
Aaon black
1.65:1failfailfail
  • AA: use #6f719b as the text (4.51:1)
  • AAA: use #9394b4 as the text (7.14:1)
  • AA: or shift the background to #9c9c9c (4.63:1)
  • AAA: or shift the background to #c2c2c2 (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #303145 as the background.

Brands using this color

Fonts for this mood

#303145 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #303145
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 #303145 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/303145-9f9cc4-df924e-251f2d-e9edf1?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