# Underworld (#1e231c)

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

## Values

- Hex: `#1e231c`
- RGB: rgb(30, 35, 28)
- HSL: hsl(103, 11%, 12%)
- OKLCH: oklch(0.249 0.015 136.7)
- Relative luminance: 0.0156
- Name: Underworld (`underworld`, source: list)
- Moods: muted, dark, luxury, bold
- Page: https://brandsweets.com/colors/underworld

## Tints & shades

- Tints (toward white): #333b30, #465242, #5c6c56, #708268, #879980, #9fad99, #b4bfb0, #ccd4c9, #e2e6e0, #fafaf9
- Shades (toward black): #1b1f19, #181c17, #181c17, #161914, #131712, #111410, #0f110e, #0f110e, #0c0e0b, #0a0b09

## Harmonies

- Complementary: #201b22
- Analogous: #21221b, #1b221d
- Triadic: #1b1d22, #221b1d
- Split-complementary: #1d1b22, #221b21
- Tetradic: #1b2122, #201b22, #221d1b

## Colors that go with Underworld

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 that reads cleanly against Underworld without the hard edge of pure #000. Seen in: Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine), Lamborghini (https://brandsweets.com/colors/brands/lamborghini-com), HubSpot (https://brandsweets.com/colors/brands/hubspot-com), Mint Modern (https://brandsweets.com/palettes/modern#mint-modern). — https://brandsweets.com/colors/charcoal
- **Amber** #ffbf00 [pool] — Amber is paired with Underworld in 18 real palettes, including Wikipedia's brand system and Google's brand system, as the accent. Seen in: Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Google (https://brandsweets.com/colors/brands/google-com), Trailhead (https://brandsweets.com/palettes/warm#trailhead), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 24 real palettes, including Rolex's brand system and Bumble's brand system put Blue beside Underworld, as the accent. Seen in: Rolex (https://brandsweets.com/colors/brands/rolex-com), Bumble (https://brandsweets.com/colors/brands/bumble-com), Signal (https://brandsweets.com/colors/brands/signal-org), Readymag (https://brandsweets.com/colors/brands/readymag-com). — https://brandsweets.com/colors/blue
- **Blue Violet** #8a2be2 [pool] — Blue Violet is paired with Underworld in 10 real palettes, including ClickUp's brand system and Yahoo's brand system, as the lead colour. Seen in: ClickUp (https://brandsweets.com/colors/brands/clickup-com), Yahoo (https://brandsweets.com/colors/brands/yahoo-com), Prepare your taste buds... (https://brandsweets.com/colors/brands/grubhub-com), Klarna US (https://brandsweets.com/colors/brands/klarna-com). — https://brandsweets.com/colors/blueviolet
- **Blush Pink** #e8b4b8 [pool] — 6 real palettes, including Graphite Mono and Rain Garden put Blush Pink beside Underworld, as the accent. Seen in: Graphite Mono (https://brandsweets.com/palettes/neutral#graphite-mono), Rain Garden (https://brandsweets.com/palettes/cool#rain-garden), Estate (https://brandsweets.com/palettes/luxury#estate), Blush (https://brandsweets.com/palettes/light#blush). — https://brandsweets.com/colors/blush-pink
- **Brown** #a52a2a [pool] — 5 real palettes, including Woodsmoke and Typewriter put Brown beside Underworld, as the accent. Seen in: Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke), Typewriter (https://brandsweets.com/palettes/editorial#typewriter), State Farm (https://brandsweets.com/colors/brands/statefarm-com), Garnet (https://brandsweets.com/palettes/warm#garnet). — https://brandsweets.com/colors/brown
- **Burlywood** #deb887 [pool] — Burlywood is paired with Underworld in 6 real palettes, including Kiln and Chalkboard, as the accent. Seen in: Kiln (https://brandsweets.com/palettes/dark#kiln), Chalkboard (https://brandsweets.com/palettes/dark#chalkboard), Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar), Coastal (https://brandsweets.com/palettes/cool#coastal). — https://brandsweets.com/colors/burlywood
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with Underworld: 10 real palettes, including Paper & Pine and SoFi's brand system, as the supporting colour. Seen in: Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine), SoFi (https://brandsweets.com/colors/brands/sofi-com), Diner (https://brandsweets.com/palettes/vivid#diner), Alpine (https://brandsweets.com/palettes/cool#alpine). — https://brandsweets.com/colors/cadetblue

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

- On white (#ffffff): 16:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.31:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #687a62 (4.55:1); AA: background → #8a8a8a (4.64:1); AAA: text → #899b82 (7.07:1); AAA: background → #adadad (7.13:1)

## Brands using this color

- **Todoist** — text #25221e (Δ 1.419) — https://brandsweets.com/colors/brands/todoist-com
- **Cohere** — text #212121 (Δ 1.489) — https://brandsweets.com/colors/brands/cohere-com
- **Postman** — text #212121 (Δ 1.489) — https://brandsweets.com/colors/brands/postman-com
- **Rolex** — text #212121 (Δ 1.489) — https://brandsweets.com/colors/brands/rolex-com
- **SoFi** — primary #212121 (Δ 1.489) — https://brandsweets.com/colors/brands/sofi-com
- **SoFi** — text #212121 (Δ 1.489) — https://brandsweets.com/colors/brands/sofi-com
- **Acer** — text #222222 (Δ 1.527) — https://brandsweets.com/colors/brands/acer-com
- **Airbnb** — text #222222 (Δ 1.527) — https://brandsweets.com/colors/brands/airbnb
- **AliExpress** — primary #222222 (Δ 1.527) — https://brandsweets.com/colors/brands/aliexpress-com
- **AliExpress** — text #222222 (Δ 1.527) — https://brandsweets.com/colors/brands/aliexpress-com
- **Nikon** — primary #222222 (Δ 1.527) — https://brandsweets.com/colors/brands/nikon-com
- **Nikon** — text #222222 (Δ 1.527) — https://brandsweets.com/colors/brands/nikon-com
- **Bumble** — primary #202020 (Δ 1.568) — https://brandsweets.com/colors/brands/bumble-com
- **Bumble** — text #202020 (Δ 1.568) — https://brandsweets.com/colors/brands/bumble-com
- **ClickUp** — text #202020 (Δ 1.568) — https://brandsweets.com/colors/brands/clickup-com
- **Lamborghini** — primary #202020 (Δ 1.568) — https://brandsweets.com/colors/brands/lamborghini-com
- **Lamborghini** — text #202020 (Δ 1.568) — https://brandsweets.com/colors/brands/lamborghini-com
- **Wikipedia** — primary #202122 (Δ 1.597) — https://brandsweets.com/colors/brands/wikipedia-org
- **Wikipedia** — text #202122 (Δ 1.597) — https://brandsweets.com/colors/brands/wikipedia-org
- **Cursor** — text #26251e (Δ 1.703) — https://brandsweets.com/colors/brands/cursor-com
- **GitLab** — text #1f1f1f (Δ 1.75) — https://brandsweets.com/colors/brands/gitlab
- **Google** — text #1f1f1f (Δ 1.75) — https://brandsweets.com/colors/brands/google-com
- **HubSpot** — text #1f1f1f (Δ 1.75) — https://brandsweets.com/colors/brands/hubspot-com
- **Revolut** — text #1f1f1f (Δ 1.75) — https://brandsweets.com/colors/brands/revolut-com
- **Retool** — primary #242424 (Δ 1.899) — https://brandsweets.com/colors/brands/retool-com

## Curated palettes containing it

- **Fresh Juice** (playful, vivid, light) — #ff6b35, #ffd166, #06d6a0, #ffffff, #1f1f1f — Orange, mango and mint — a sugar rush; keep the type black so it stays legible under all that color. — tool: https://brandsweets.com/palettes/new/ff6b35-ffd166-06d6a0-ffffff-1f1f1f — collection: https://brandsweets.com/palettes/playful
- **Forest Floor** (dark, muted, warm) — #8fae6a, #6b7a5a, #d9a05b, #1b2419, #e9e6dc — Moss and bark with a mushroom-cap amber — grounded and quiet, made for long-form nature content. — tool: https://brandsweets.com/palettes/new/8fae6a-6b7a5a-d9a05b-1b2419-e9e6dc — collection: https://brandsweets.com/palettes/dark
- **Crayon Box** (playful, vivid, friendly) — #ff5e5b, #00cecb, #ffed66, #ffffff, #222222 — Red, teal and yellow at crayon saturation — joyful, but on white with black type so it stays readable for grown-ups. — tool: https://brandsweets.com/palettes/new/ff5e5b-00cecb-ffed66-ffffff-222222 — collection: https://brandsweets.com/palettes/playful
- **Retro Pop** (playful, bold, warm) — #e63946, #457b9d, #f4a261, #fff4e0, #23201c — Fifties-diner red and steel blue with a peach — nostalgic pop that still passes contrast. — tool: https://brandsweets.com/palettes/new/e63946-457b9d-f4a261-fff4e0-23201c — collection: https://brandsweets.com/palettes/playful
- **Paper & Pine** (minimal, cool, clean, muted) — #1f4d3a, #8aa39b, #d98c3f, #f7f7f4, #1c2321 — Deep pine on paper-white with a marmalade accent — a quiet, sustainable-brand palette that isn't beige. — tool: https://brandsweets.com/palettes/new/1f4d3a-8aa39b-d98c3f-f7f7f4-1c2321 — collection: https://brandsweets.com/palettes/minimal
- **Riverbed** (earthy, muted, cool) — #5f7a6b, #a89f91, #b7742f, #f4f3ef, #22281f — Wet-stone green and pebble grey with a copper accent — an earth palette that leans cool, for outdoor and wellness. — tool: https://brandsweets.com/palettes/new/5f7a6b-a89f91-b7742f-f4f3ef-22281f — collection: https://brandsweets.com/palettes/earthy
- **Graphite Mono** (monochrome, neutral, minimal, modern) — #222222, #767676, #bdbdbd, #fafafa, #111111 — Five greys, no hue — the true monochrome; the accent is a lighter grey, so hierarchy comes from weight and size alone. — tool: https://brandsweets.com/palettes/new/222222-767676-bdbdbd-fafafa-111111 — collection: https://brandsweets.com/palettes/monochrome

## 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/1e231c-a6bea2-704edf-1f2d21-eff1e9?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: "#1e231c" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.