# #170f39

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

## Values

- Hex: `#170f39`
- RGB: rgb(23, 15, 57)
- HSL: hsl(251, 58%, 14%)
- OKLCH: oklch(0.209 0.078 286.3)
- Relative luminance: 0.0082
- Nearest named color: Midnight Monarch (#1c0f33, Δ 1.615) — https://brandsweets.com/colors/midnight-monarch
- Moods: cool, dark, luxury, bold, modern
- Page: https://brandsweets.com/colors/170f39

## Tints & shades

- Tints (toward white): #231859, #32217d, #3f2a9d, #4d33c1, #664ed0, #816ed8, #a192e2, #bdb2eb, #dcd7f4, #f8f7fd
- Shades (toward black): #150e34, #130d30, #120c2c, #100b28, #0f0a24, #0d0920, #0b071c, #0a0618, #080514, #060410

## Harmonies

- Complementary: #31380f
- Analogous: #0f1c38, #2b0f38
- Triadic: #38170f, #0f3817
- Split-complementary: #382b0f, #1c380f
- Tetradic: #380f1c, #31380f, #0f382b

## Colors that go with #170f39

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 #170f39: softer than #000 and cool enough to feel like part of the same palette. Seen in: Asana (https://brandsweets.com/colors/brands/asana-com), Volkswagen (https://brandsweets.com/colors/brands/vw-com), Audi (https://brandsweets.com/colors/brands/audi-com), Vimeo (https://brandsweets.com/colors/brands/vimeo-com). — https://brandsweets.com/colors/charcoal
- **Sea Green** #2e8b57 [harmony, pool: split] — Sea Green is a split-complement of #170f39: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Paramount+ (https://brandsweets.com/colors/brands/paramountplus-com), Intel (https://brandsweets.com/colors/brands/intel-com), Asana (https://brandsweets.com/colors/brands/asana-com), Kia (https://brandsweets.com/colors/brands/kia-com). — https://brandsweets.com/colors/seagreen
- **Sienna** #a0522d [harmony, pool: split] — Sienna is a split-complement of #170f39: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Oatly (https://brandsweets.com/colors/brands/oatly-com), Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke), BrandSweets (https://brandsweets.com/colors/brands/brandsweets). — https://brandsweets.com/colors/sienna
- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #170f39's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Discover (https://brandsweets.com/colors/brands/discover-com), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Deep Water (https://brandsweets.com/palettes/dark#deep-water). — https://brandsweets.com/colors/steelblue
- **Teal** #008080 [harmony, pool: triadic] — Teal completes a triad with #170f39 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Clinic (https://brandsweets.com/palettes/clean#clinic), Lufthansa (https://brandsweets.com/colors/brands/lufthansa-com), Sapphire & Gold (https://brandsweets.com/palettes/luxury#sapphire-and-gold), Gemstone (https://brandsweets.com/palettes/vivid#gemstone). — https://brandsweets.com/colors/teal
- **Amber** #ffbf00 [pool] — Amber is paired with #170f39 in 18 real palettes, including Southwest Airlines's brand system and Blueprint, as the accent. Seen in: Southwest Airlines (https://brandsweets.com/colors/brands/southwest-com), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 19 real palettes, including Penpot's brand system and League of Legends's brand system put Blue beside #170f39, as the supporting colour. Seen in: Penpot (https://brandsweets.com/colors/brands/penpot-app), League of Legends (https://brandsweets.com/colors/brands/leagueoflegends-com), Warp (https://brandsweets.com/colors/brands/warp-dev), Monzo (https://brandsweets.com/colors/brands/monzo-com). — https://brandsweets.com/colors/blue
- **Blue Violet** #8a2be2 [pool] — Blue Violet is paired with #170f39 in 10 real palettes, including Gemstone and Yahoo's brand system, as the supporting colour. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone), 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

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

- On white (#ffffff): 18.04:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.16:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #7b66d6 (4.71:1); AA: background → #808080 (4.57:1); AAA: text → #9a8ae0 (7.09:1); AAA: background → #a3a3a3 (7.15:1)

## Brands using this color

- **Penpot** — primary #100c3c (Δ 1.795) — https://brandsweets.com/colors/brands/penpot-app

## Fonts for this mood

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

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/170f39-a89cc4-dfb34e-281f2d-e9ecf1?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: "#170f39" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.