# #515b00

A color — vivid, dark, luxury, bold. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#515b00`
- RGB: rgb(81, 91, 0)
- HSL: hsl(67, 100%, 18%)
- OKLCH: oklch(0.447 0.103 116.9)
- Relative luminance: 0.0923
- Nearest named color: Forestial Outpost (#556611, Δ 3.386) — https://brandsweets.com/colors/forestial-outpost
- Moods: vivid, dark, luxury, bold
- Page: https://brandsweets.com/colors/515b00

## Tints & shades

- Tints (toward white): #758500, #99ad00, #bdd600, #e1ff00, #e6ff29, #ebff52, #f0ff7a, #f4ffa3, #f9ffcc, #fefff5
- Shades (toward black): #4d5700, #444d00, #3f4700, #363d00, #323800, #2d3300, #242900, #202400, #171900, #121400

## Harmonies

- Complementary: #0b005c
- Analogous: #5c3900, #235c00
- Triadic: #00515c, #5c0051
- Split-complementary: #00235c, #39005c
- Tetradic: #005c39, #0b005c, #5c0023

## Colors that go with #515b00

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Charcoal** #36454f [role, pool] — Charcoal is the body-text near-black for #515b00: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy. Seen in: Canopy (https://brandsweets.com/palettes/cool#canopy), Stanley (https://brandsweets.com/colors/brands/stanley1913-com), Pampers (https://brandsweets.com/colors/brands/pampers-com). — https://brandsweets.com/colors/charcoal
- **Royal Blue** #4169e1 [harmony, pool: split] — Royal Blue is a split-complement of #515b00: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Xbox (https://brandsweets.com/colors/brands/xbox-com), Subaru (https://brandsweets.com/colors/brands/subaru-com), Console Light (https://brandsweets.com/palettes/technical#console-light). — https://brandsweets.com/colors/royalblue
- **Sage Green** #9caf88 [pool] — Designers have shipped Sage Green with #515b00: 5 real palettes, including Pine & Birch and Olive Grove, as the supporting colour. Seen in: Pine & Birch (https://brandsweets.com/palettes/clean#pine-and-birch), Olive Grove (https://brandsweets.com/palettes/muted#olive-grove), Homestead (https://brandsweets.com/palettes/warm#homestead), Oatmeal (https://brandsweets.com/palettes/neutral#oatmeal). — https://brandsweets.com/colors/sage-green
- **Taupe** #483c32 [pool] — Taupe is paired with #515b00 in 17 real palettes, including Cider and Pine & Birch, as that palette's text colour. Seen in: Cider (https://brandsweets.com/palettes/warm#cider), Pine & Birch (https://brandsweets.com/palettes/clean#pine-and-birch), Olive Grove (https://brandsweets.com/palettes/muted#olive-grove), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen). — https://brandsweets.com/colors/taupe
- **Blue Violet** #8a2be2 [harmony: complementary] — Blue Violet sits directly opposite #515b00 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. — https://brandsweets.com/colors/blueviolet
- **Medium Sea Green** #3cb371 [pool] — Medium Sea Green is paired with #515b00 in 3 real palettes, including Undergrowth and Console Light, as the lead colour. Seen in: Undergrowth (https://brandsweets.com/palettes/dark#undergrowth), Console Light (https://brandsweets.com/palettes/technical#console-light), Mint Modern (https://brandsweets.com/palettes/modern#mint-modern). — https://brandsweets.com/colors/mediumseagreen
- **Rust** #b7410e [pool] — Rust shows up next to #515b00 in 3 real palettes, including Trailhead and Magazine Ochre, as the lead colour. Seen in: Trailhead (https://brandsweets.com/palettes/warm#trailhead), Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre), Harvest (https://brandsweets.com/palettes/warm#harvest). — https://brandsweets.com/colors/rust
- **Saddle Brown** #8b4513 [pool] — Designers have shipped Saddle Brown with #515b00: 3 real palettes, including Cider and Bookshop, as the lead colour. Seen in: Cider (https://brandsweets.com/palettes/warm#cider), Bookshop (https://brandsweets.com/palettes/editorial#bookshop), Darkroom (https://brandsweets.com/palettes/muted#darkroom). — https://brandsweets.com/colors/saddlebrown

## Contrast (WCAG 2.x, as text)

- On white (#ffffff): 7.38:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.85:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #718000 (4.79:1); AA: background → #cccccc (4.59:1); AAA: text → #8c9e00 (7.01:1); AAA: background → #fafafa (7.07:1)

## Fonts for this mood

- luxury: https://brandsweets.com/fonts/mood/luxury
- bold: https://brandsweets.com/fonts/mood/bold

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/515b00-b8bea2-4e83df-262d1f-f1eee9?lock=0&style=vibrant
(Humans lock/regenerate in the tool; the URL is the state — read `lock=` back to see what they kept.)

## Connect an agent

Point any MCP client at the BrandSweets colors endpoint for the same engine:

- Endpoint: https://mcp.brandsweets.com/colors/mcp
- Tools: `analyze_color` (e.g. `analyze_color({ color: "#515b00" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.