# #1d8143

A color — vivid. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#1d8143`
- RGB: rgb(29, 129, 67)
- HSL: hsl(143, 63%, 31%)
- OKLCH: oklch(0.533 0.131 151.1)
- Relative luminance: 0.1637
- Nearest named color: Bold Irish (#2a814d, Δ 1.629) — https://brandsweets.com/colors/bold-irish
- Moods: vivid
- Page: https://brandsweets.com/colors/1d8143

## Tints & shades

- Tints (toward white): #249e53, #2ab760, #33d170, #50d784, #6ede99, #86e4aa, #a4eabf, #c1f1d3, #daf7e5, #f7fdf9
- Shades (toward black): #1a743d, #196c39, #166032, #13532c, #114b27, #0e3e21, #0b321a, #082514, #071d0f, #041109

## Harmonies

- Complementary: #811d5b
- Analogous: #29811d, #1d8175
- Triadic: #431d81, #81431d
- Split-complementary: #751d81, #811d29
- Tetradic: #1d2981, #811d5b, #81751d

## Colors that go with #1d8143

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 text near-black for #1d8143: softer than #000 and cool enough to feel like part of the same palette. Seen in: Asana (https://brandsweets.com/colors/brands/asana-com), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Stanley (https://brandsweets.com/colors/brands/stanley1913-com), N26 (https://brandsweets.com/colors/brands/n26-com). — https://brandsweets.com/colors/charcoal
- **Royal Blue** #4169e1 [harmony, pool: triadic] — Royal Blue completes a triad with #1d8143 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Coinbase (https://brandsweets.com/colors/brands/coinbase), Subaru (https://brandsweets.com/colors/brands/subaru-com), Xbox (https://brandsweets.com/colors/brands/xbox-com), Console Light (https://brandsweets.com/palettes/technical#console-light). — https://brandsweets.com/colors/royalblue
- **Medium Violet Red** #c71585 [harmony, pool: complementary] — Medium Violet Red sits directly opposite #1d8143 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Bun (https://brandsweets.com/colors/brands/bun-sh). — https://brandsweets.com/colors/mediumvioletred
- **Blue** #0000ff [pool] — 4 real palettes, including Kia's brand system and Instacart's brand system put Blue beside #1d8143, as the accent. Seen in: Kia (https://brandsweets.com/colors/brands/kia-com), Instacart (https://brandsweets.com/colors/brands/instacart-com), Warp (https://brandsweets.com/colors/brands/warp-dev), Rolex (https://brandsweets.com/colors/brands/rolex-com). — https://brandsweets.com/colors/blue
- **Crimson** #dc143c [pool] — Crimson is paired with #1d8143 in 5 real palettes, including Coinbase's brand system and Five Guys's brand system. Seen in: Coinbase (https://brandsweets.com/colors/brands/coinbase), Five Guys (https://brandsweets.com/colors/brands/fiveguys-com), Netflix (https://brandsweets.com/colors/brands/netflix), Gemstone (https://brandsweets.com/palettes/vivid#gemstone). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #1d8143: 6 real palettes, including Intel's brand system and Jack Daniel's's brand system, as the supporting colour. Seen in: Intel (https://brandsweets.com/colors/brands/intel-com), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Netflix (https://brandsweets.com/colors/brands/netflix), Paramount+ (https://brandsweets.com/colors/brands/paramountplus-com). — https://brandsweets.com/colors/denim
- **Midnight Blue** #191970 [pool] — 4 real palettes, including Paramount+'s brand system and Telehealth put Midnight Blue beside #1d8143, as the supporting colour. Seen in: Paramount+ (https://brandsweets.com/colors/brands/paramountplus-com), Telehealth (https://brandsweets.com/palettes/modern#telehealth), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust). — https://brandsweets.com/colors/midnightblue
- **Sage Green** #9caf88 [pool] — Designers have shipped Sage Green with #1d8143: 4 real palettes, including Forest Floor and Olive Grove, as the lead colour. Seen in: Forest Floor (https://brandsweets.com/palettes/dark#forest-floor), Olive Grove (https://brandsweets.com/palettes/muted#olive-grove), Riverbed (https://brandsweets.com/palettes/muted#riverbed), Pine & Birch (https://brandsweets.com/palettes/clean#pine-and-birch). — https://brandsweets.com/colors/sage-green

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

- On white (#ffffff): 4.91:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #176434 (7.22:1)
- On black (#000000): 4.27:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #1f8948 (4.73:1); AA: background → #f5f5f5 (4.51:1); AAA: text → #28af5b (7.37:1)

## Brands using this color

- **GitHub** — success #1a7f37 (Δ 1.457) — https://brandsweets.com/colors/brands/github
- **Coinbase** — success #098551 (Δ 1.792) — https://brandsweets.com/colors/brands/coinbase
- **Lemon Squeezy** — secondary #1e874c (Δ 1.928) — https://brandsweets.com/colors/brands/lemonsqueezy-com

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/1d8143-a2beb0-c859d4-1f2d2b-eaf1e9?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: "#1d8143" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.