Color
#3d4151
#3d4151rgb(61, 65, 81)hsl(228, 14%, 28%)oklch(0.378 0.028 274)Colors that go with #3d4151
Blue, Blush Pink and Burlywood lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.
Blue #0000ff
shipped9 real palettes, including Jeep's brand system and Dunkin''s brand system put Blue beside #3d4151, as the accent.
Blush Pink #e8b4b8
shipped4 real palettes, including Nursery and Garden Wedding put Blush Pink beside #3d4151, as the lead colour.
Burlywood #deb887
shippedBurlywood is paired with #3d4151 in 4 real palettes, including Polaroid and Coastal, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #3d4151: 5 real palettes, including Paper & Pine and Clean Beauty, as the supporting colour.
Copper #b87333
shippedDesigners have shipped Copper with #3d4151: 7 real palettes, including Notion's brand system and Clean Beauty.
Crimson #dc143c
shippedCrimson is paired with #3d4151 in 11 real palettes, including Codecademy's brand system and Dunkin''s brand system, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #3d4151: 14 real palettes, including Hinge's brand system and Jack Daniel's's brand system, as the accent.
White Smoke #f5f5f5
neutralWhite Smoke is the near-white surface #3d4151 was made for — maximum legibility with no colour cast to argue with.
Real palettes that use #3d4151
Tints & shades
Harmonies
Contrast
| #3d4151 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 10.13:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.07:1 | fail | fail | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3d4151 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
#3d4151 reads as cool, muted, dark. The font library is tagged with the same vocabulary:
Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
›analyze #3d4151 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/3d4151-9c9fc4-df7c4e-231f2d-e9eff1?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md