# #191b9a

A color — cool, vivid, technical, modern. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#191b9a`
- RGB: rgb(25, 27, 154)
- HSL: hsl(239, 72%, 35%)
- OKLCH: oklch(0.341 0.194 269.3)
- Relative luminance: 0.0332
- Nearest named color: Deepsea Kraken (#082599, Δ 1.76) — https://brandsweets.com/colors/deepsea-kraken
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/191b9a

## Tints & shades

- Tints (toward white): #1d20b4, #2225d3, #3538de, #5052e2, #6e70e7, #898aec, #a3a4f0, #bdbef4, #dcdcf9, #f6f6fe
- Shades (toward black): #17198c, #15167f, #131472, #101265, #0e1058, #0b0c46, #090a39, #07082c, #05051f, #030312

## Harmonies

- Complementary: #9a9719
- Analogous: #195b9a, #57199a
- Triadic: #9a191b, #1b9a19
- Split-complementary: #9a5719, #5b9a19
- Tetradic: #9a195b, #9a9719, #199a57

## Colors that go with #191b9a

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

- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #191b9a's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Hershey's (https://brandsweets.com/colors/brands/hersheys-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Glacier (https://brandsweets.com/palettes/cool#glacier), FedEx (https://brandsweets.com/colors/brands/fedex-com). — https://brandsweets.com/colors/steelblue
- **Crimson** #dc143c [pool] — Crimson is paired with #191b9a in 6 real palettes, including Pepsi's brand system and Nintendo's brand system, as the supporting colour. Seen in: Pepsi (https://brandsweets.com/colors/brands/pepsi-com), Nintendo (https://brandsweets.com/colors/brands/nintendo-com), Casper Sleep (https://brandsweets.com/colors/brands/casper-com), Marvel (https://brandsweets.com/colors/brands/marvel-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #191b9a: 6 real palettes, including Bank of America's brand system and Warbyparker's brand system, as the accent. Seen in: Bank of America (https://brandsweets.com/colors/brands/bankofamerica-com), Warbyparker (https://brandsweets.com/colors/brands/warbyparker-com), Unilever (https://brandsweets.com/colors/brands/unilever-com), Panasonic (https://brandsweets.com/colors/brands/panasonic-com). — https://brandsweets.com/colors/denim
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #191b9a in 7 real palettes, including Discord's brand system and Nivea's brand system, as the lead colour. Seen in: Discord (https://brandsweets.com/colors/brands/discord), Nivea (https://brandsweets.com/colors/brands/nivea-com), Nokia (https://brandsweets.com/colors/brands/nokia-com), NHL (https://brandsweets.com/colors/brands/nhl-com). — https://brandsweets.com/colors/royalblue
- **Olive Green** #808000 [harmony: complementary] — Olive Green sits directly opposite #191b9a 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/olive
- **Blue** #0000ff [pool] — 3 real palettes, including Procter & Gamble's brand system and Pfizer's brand system put Blue beside #191b9a, as the supporting colour. Seen in: Procter & Gamble (https://brandsweets.com/colors/brands/pg-com), Pfizer (https://brandsweets.com/colors/brands/pfizer-com), CVS (https://brandsweets.com/colors/brands/cvs-com). — https://brandsweets.com/colors/blue
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #191b9a: softer than #000 and cool enough to feel like part of the same palette. Seen in: Boeing (https://brandsweets.com/colors/brands/boeing-com), dbt Labs (https://brandsweets.com/colors/brands/getdbt-com). — https://brandsweets.com/colors/charcoal
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #191b9a: 3 real palettes, including Nintendo's brand system and 3M's brand system, as the accent. Seen in: Nintendo (https://brandsweets.com/colors/brands/nintendo-com), 3M (https://brandsweets.com/colors/brands/3m-com), MLB (https://brandsweets.com/colors/brands/mlb-com). — https://brandsweets.com/colors/firebrick

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

- On white (#ffffff): 12.61:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.66:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #6568e6 (4.68:1); AA: background → #9c9c9c (4.59:1); AAA: text → #8d8fec (7.27:1); AAA: background → #c2c2c2 (7.08:1)

## Brands using this color

- **Tide** — secondary #13259c (Δ 1.65) — https://brandsweets.com/colors/brands/tide-com

## Fonts for this mood

- technical: https://brandsweets.com/fonts/mood/technical
- 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/191b9a-a09cc4-df964e-251f2d-e9edf1?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: "#191b9a" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.