Trailhead
Open in tool →Rust, pine and sun — high-visibility earth tones that read at a distance and on a trail sign.
Color
#3f501b
#3f501b
hex
#3f501brgb
rgb(63, 80, 27)hsl
hsl(79, 50%, 21%)oklch
oklch(0.404 0.08 124.9)Closest name: Godzilla (#3c4d03)Relative luminance 0.0687
Colors that go with #3f501b
Royal Blue, Blue and Emerald Green 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.
Royal Blue #4169e1
split-complementshippedRoyal Blue is a split-complement of #3f501b: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Blue #0000ff
shipped5 real palettes, including Rolex's brand system and Warp's brand system put Blue beside #3f501b, as the accent.
Emerald Green #50c878
shippedEmerald Green is paired with #3f501b in 4 real palettes, including Neon's brand system and CircleCI's brand system, as the lead colour.
Orange Red #ff4500
shippedOrange Red is paired with #3f501b in 4 real palettes, including Neon's brand system and HubSpot's brand system, as the accent.
Saddle Brown #8b4513
shippedDesigners have shipped Saddle Brown with #3f501b: 4 real palettes, including Bookshop and Domino's's brand system, as the lead colour.
Sage Green #9caf88
shippedDesigners have shipped Sage Green with #3f501b: 8 real palettes, including Pine & Birch and Stone, as the supporting colour.
Dark Orchid #9932cc
complementaryDark Orchid sits directly opposite #3f501b on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Cream #fffdd0
neutralCream is the surface #3f501b wants: a warm off-white that shares its undertone, so #3f501b reads softer on it than on pure white.
Real palettes that use #3f501b
Tints & shades
Harmonies
Contrast
| #3f501b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 8.84:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.37:1 | 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 #3f501b 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
#3f501b reads as dark, luxury, bold. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #3f501b
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 #3f501b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/3f501b-b2bea2-4e66df-232d1f-f1f0e9?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