# #101f75

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

## Values

- Hex: `#101f75`
- RGB: rgb(16, 31, 117)
- HSL: hsl(231, 76%, 26%)
- OKLCH: oklch(0.299 0.146 267.6)
- Relative luminance: 0.0237
- Nearest named color: midnightblue (#191970, Δ 1.734) — https://brandsweets.com/colors/midnightblue
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/101f75

## Tints & shades

- Tints (toward white): #142794, #1830b4, #1d39d7, #354fe3, #546be8, #7486ec, #93a1f0, #b7c0f5, #d7dcf9, #f6f7fe
- Shades (toward black): #0f1d6c, #0d1a63, #0c1755, #0a144c, #091243, #08103a, #070d31, #050a24, #04071b, #020512

## Harmonies

- Complementary: #756610
- Analogous: #105175, #331075
- Triadic: #75101f, #1f7510
- Split-complementary: #753310, #517510
- Tetradic: #751051, #756610, #107533

## Colors that go with #101f75

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 #101f75: softer than #000 and cool enough to feel like part of the same palette. Seen in: Boeing (https://brandsweets.com/colors/brands/boeing-com), CeraVe (https://brandsweets.com/colors/brands/cerave-com), Plaid (https://brandsweets.com/colors/brands/plaid-com), dbt Labs (https://brandsweets.com/colors/brands/getdbt-com). — https://brandsweets.com/colors/charcoal
- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #101f75's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Deep Water (https://brandsweets.com/palettes/dark#deep-water), Glacier (https://brandsweets.com/palettes/cool#glacier), Hershey's (https://brandsweets.com/colors/brands/hersheys-com), Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/steelblue
- **Blue** #0000ff [pool] — 5 real palettes, including Alaska Airlines's brand system and Monzo's brand system put Blue beside #101f75, as the accent. Seen in: Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), Monzo (https://brandsweets.com/colors/brands/monzo-com), Procter & Gamble (https://brandsweets.com/colors/brands/pg-com), Sketch (https://brandsweets.com/colors/brands/sketch-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #101f75: 5 real palettes, including Purina Pro Plan's brand system and Blue Mono, as the accent. Seen in: Purina Pro Plan (https://brandsweets.com/colors/brands/chewy-com), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Tide (https://brandsweets.com/colors/brands/tide-com), Glacier (https://brandsweets.com/palettes/cool#glacier). — https://brandsweets.com/colors/cobalt
- **Crimson** #dc143c [pool] — Crimson is paired with #101f75 in 5 real palettes, including Nintendo's brand system and Casper Sleep's brand system, as the supporting colour. Seen in: Nintendo (https://brandsweets.com/colors/brands/nintendo-com), Casper Sleep (https://brandsweets.com/colors/brands/casper-com), Pepsi (https://brandsweets.com/colors/brands/pepsi-com), Marvel (https://brandsweets.com/colors/brands/marvel-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #101f75: 11 real palettes, including Bank of America's brand system and Panasonic's brand system, as the accent. Seen in: Bank of America (https://brandsweets.com/colors/brands/bankofamerica-com), Panasonic (https://brandsweets.com/colors/brands/panasonic-com), Hasbro (https://brandsweets.com/colors/brands/hasbro-com), Skechers (https://brandsweets.com/colors/brands/skechers-com). — https://brandsweets.com/colors/denim
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #101f75 in 8 real palettes, including Discord's brand system and Confluent's brand system, as the lead colour. Seen in: Discord (https://brandsweets.com/colors/brands/discord), Confluent (https://brandsweets.com/colors/brands/confluent-io), Spectrum (https://brandsweets.com/colors/brands/spectrum-com), Nivea (https://brandsweets.com/colors/brands/nivea-com). — https://brandsweets.com/colors/royalblue
- **Olive Green** #808000 [harmony: complementary] — Olive Green sits directly opposite #101f75 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

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

- On white (#ffffff): 14.24:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.47:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #546be8 (4.65:1); AA: background → #919191 (4.52:1); AAA: text → #8192ee (7.28:1); AAA: background → #b8b8b8 (7.18:1)

## Brands using this color

- **Visa** — primary #1a1e73 (Δ 1.205) — https://brandsweets.com/colors/brands/visa-com
- **Visa** — secondary #1a1f72 (Δ 1.285) — https://brandsweets.com/colors/brands/visa-com
- **Crest** — secondary #001c71 (Δ 1.898) — https://brandsweets.com/colors/brands/crest-com
- **Purina Pro Plan** — secondary #09267b (Δ 1.909) — https://brandsweets.com/colors/brands/chewy-com

## Fonts for this mood

- technical: https://brandsweets.com/fonts/mood/technical
- modern: https://brandsweets.com/fonts/mood/modern
- 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/101f75-9c9ec4-df834e-231f2d-e9eef1?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: "#101f75" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.