Pine & Birch
Open in tool →One deep pine on birch-white with sage and bark greys — Scandinavian forest: mostly light, one committed green.
Color
#21633b
#21633b
hex
#21633brgb
rgb(33, 99, 59)hsl
hsl(144, 50%, 26%)oklch
oklch(0.447 0.094 153.4)Closest name: Bucolic (#1b6634)Relative luminance 0.0956
Colors that go with #21633b
Charcoal, Royal Blue and Medium Violet Red 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.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #21633b: softer than #000 and cool enough to feel like part of the same palette.
Royal Blue #4169e1
triadicshippedRoyal Blue completes a triad with #21633b — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Medium Violet Red #c71585
complementaryshippedMedium Violet Red sits directly opposite #21633b on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Blue #0000ff
shipped4 real palettes, including Rolex's brand system and Warp's brand system put Blue beside #21633b, as the accent.
Crimson #dc143c
shippedCrimson is paired with #21633b in 6 real palettes, including MAC Cosmetics's brand system and Gemstone, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #21633b: 5 real palettes, including Xbox's brand system and Intel's brand system, as the supporting colour.
Sage Green #9caf88
shippedDesigners have shipped Sage Green with #21633b: 6 real palettes, including Pine & Birch and Darkroom, as the supporting colour.
Taupe #483c32
shippedTaupe is paired with #21633b in 18 real palettes, including Pine & Birch and Bookshop, as that palette's text colour.
Real palettes that use #21633b
Tints & shades
Harmonies
Contrast
| #21633b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 7.21:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.91:1 | 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 #21633b as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#21633b reads as dark, luxury, bold. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #21633b
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 #21633b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/21633b-a2beb0-ca59d4-1f2d2b-eaf1e9?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