Stone
Open in tool →Stone greys with a faint warmth — Tailwind's stone scale used as a whole palette: interfaces that want to disappear.
Color
#3d453b
#3d453b
hex
#3d453brgb
rgb(61, 69, 59)hsl
hsl(108, 8%, 25%)oklch
oklch(0.38 0.02 139.4)Closest name: Black Panther (#424242)Relative luminance 0.0556
Colors that go with #3d453b
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 #3d453b, as the accent.
Blush Pink #e8b4b8
shipped4 real palettes, including Nursery and Garden Wedding put Blush Pink beside #3d453b, as the lead colour.
Burlywood #deb887
shippedBurlywood is paired with #3d453b in 4 real palettes, including Polaroid and Chalkboard, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #3d453b: 4 real palettes, including Paper & Pine and Clean Beauty, as the supporting colour.
Champagne #f7e7ce
shipped4 real palettes, including Sweetgreen's brand system and Darkroom put Champagne beside #3d453b, as the supporting colour.
Copper #b87333
shippedDesigners have shipped Copper with #3d453b: 8 real palettes, including Notion's brand system and Clean Beauty.
Crimson #dc143c
shippedCrimson is paired with #3d453b in 12 real palettes, including Dunkin''s brand system and Codecademy's brand system, as the accent.
White Smoke #f5f5f5
neutralWhite Smoke is the near-white surface #3d453b was made for — maximum legibility with no colour cast to argue with.
Real palettes that use #3d453b
Tints & shades
Harmonies
Contrast
| #3d453b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 9.94:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.11:1 | 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 #3d453b as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Palettes built around it
Fonts for this mood
#3d453b reads as muted, dark, luxury. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #3d453b
live endpointPoint 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.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #3d453b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/3d453b-a4bea2-7c4edf-1f2d23-eff1e9?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