# #09128b

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

## Values

- Hex: `#09128b`
- RGB: rgb(9, 18, 139)
- HSL: hsl(236, 88%, 29%)
- OKLCH: oklch(0.306 0.187 266.2)
- Relative luminance: 0.0235
- Nearest named color: darkblue (#00008b, Δ 2.275) — https://brandsweets.com/colors/darkblue
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/09128b

## Tints & shades

- Tints (toward white): #0b16ad, #0d1ace, #0f1ef0, #313ef2, #525df4, #6f78f6, #9198f8, #b2b7fa, #d4d7fc, #f5f6fe
- Shades (toward black): #081081, #070f73, #070d69, #060b5b, #050a51, #040843, #04073a, #03052b, #020422, #010213

## Harmonies

- Complementary: #8b8209
- Analogous: #09538b, #41098b
- Triadic: #8b0912, #128b09
- Split-complementary: #8b4109, #538b09
- Tetradic: #8b0953, #8b8209, #098b41

## Colors that go with #09128b

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

- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #09128b — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. 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
- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #09128b'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), Deep Water (https://brandsweets.com/palettes/dark#deep-water), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Glacier (https://brandsweets.com/palettes/cool#glacier). — https://brandsweets.com/colors/steelblue
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #09128b: 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), CeraVe (https://brandsweets.com/colors/brands/cerave-com). — https://brandsweets.com/colors/charcoal
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #09128b: 4 real palettes, including Purina Pro Plan's brand system and Tide's brand system, as the accent. Seen in: Purina Pro Plan (https://brandsweets.com/colors/brands/chewy-com), Tide (https://brandsweets.com/colors/brands/tide-com), Glacier (https://brandsweets.com/palettes/cool#glacier), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono). — https://brandsweets.com/colors/cobalt
- **Denim** #1560bd [pool] — Designers have shipped Denim with #09128b: 4 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), Warbyparker (https://brandsweets.com/colors/brands/warbyparker-com). — https://brandsweets.com/colors/denim
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #09128b in 5 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), Confluent (https://brandsweets.com/colors/brands/confluent-io), Nokia (https://brandsweets.com/colors/brands/nokia-com). — https://brandsweets.com/colors/royalblue
- **Olive Green** #808000 [harmony: complementary] — Olive Green sits directly opposite #09128b 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
- **Orange Red** #ff4500 [pool] — Orange Red is paired with #09128b in 3 real palettes, including Tide's brand system and NASA's brand system, as the accent. Seen in: Tide (https://brandsweets.com/colors/brands/tide-com), NASA (https://brandsweets.com/colors/brands/nasa-gov), Intercom (https://brandsweets.com/colors/brands/intercom-com). — https://brandsweets.com/colors/orangered

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

- On white (#ffffff): 14.28:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.47:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #5c66f5 (4.67:1); AA: background → #919191 (4.53:1); AAA: text → #878ff7 (7.3:1); AAA: background → #b8b8b8 (7.2:1)

## Brands using this color

- **Boeing** — accent #08088c (Δ 1.041) — https://brandsweets.com/colors/brands/boeing-com
- **Pepsi** — primary #0e0e96 (Δ 1.901) — https://brandsweets.com/colors/brands/pepsi-com
- **Pepsi** — accent #0e0e96 (Δ 1.901) — https://brandsweets.com/colors/brands/pepsi-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/09128b-9e9cc4-df8f4e-241f2d-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: "#09128b" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.