# #155f8a

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

## Values

- Hex: `#155f8a`
- RGB: rgb(21, 95, 138)
- HSL: hsl(202, 74%, 31%)
- OKLCH: oklch(0.464 0.098 240.4)
- Relative luminance: 0.1018
- Nearest named color: Blue Velvet (#0d6183, Δ 1.487) — https://brandsweets.com/colors/blue-velvet
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/155f8a

## Tints & shades

- Tints (toward white): #1974a9, #1d86c3, #269bdf, #45a9e3, #64b7e8, #7ec4ec, #9dd2f0, #bce0f5, #d7edf9, #f6fbfe
- Shades (toward black): #13557c, #114f73, #0f4666, #0d3d59, #0c3750, #0a2e43, #082535, #061b28, #05151f, #030c12

## Harmonies

- Complementary: #8a3f15
- Analogous: #158a7a, #15248a
- Triadic: #8a155f, #5f8a15
- Split-complementary: #8a1524, #8a7a15
- Tetradic: #7a158a, #8a3f15, #248a15

## Colors that go with #155f8a

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 #155f8a: softer than #000 and cool enough to feel like part of the same palette. Seen in: Harbour (https://brandsweets.com/palettes/cool#harbour), Amazon (https://brandsweets.com/colors/brands/amazon-com), Pampers (https://brandsweets.com/colors/brands/pampers-com), Hasbro (https://brandsweets.com/colors/brands/hasbro-com). — https://brandsweets.com/colors/charcoal
- **Royal Blue** #4169e1 [harmony, pool: analogous] — Royal Blue is #155f8a's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Motorola (https://brandsweets.com/colors/brands/motorola-com), Stripe (https://brandsweets.com/colors/brands/stripe), Carrefour (https://brandsweets.com/colors/brands/carrefour-com), Xbox (https://brandsweets.com/colors/brands/xbox-com). — https://brandsweets.com/colors/royalblue
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #155f8a on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Dyson (https://brandsweets.com/colors/brands/dyson-com). — https://brandsweets.com/colors/sienna
- **Amber** #ffbf00 [pool] — Amber is paired with #155f8a in 5 real palettes, including McDonald's's brand system and Lemon Squeezy's brand system, as the lead colour. Seen in: McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com), Wired (https://brandsweets.com/colors/brands/wired-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 6 real palettes, including Tesco's brand system and Activision's brand system put Blue beside #155f8a, as the supporting colour. Seen in: Tesco (https://brandsweets.com/colors/brands/tesco-com), Activision (https://brandsweets.com/colors/brands/activision-com), CVS (https://brandsweets.com/colors/brands/cvs-com), Pixar (https://brandsweets.com/colors/brands/pixar-com). — https://brandsweets.com/colors/blue
- **Crimson** #dc143c [pool] — Crimson is paired with #155f8a in 16 real palettes, including Costco's brand system and McDonald's's brand system, as the lead colour. Seen in: Costco (https://brandsweets.com/colors/brands/costco-com), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Walgreens (https://brandsweets.com/colors/brands/walgreens-com), Wendy's (https://brandsweets.com/colors/brands/wendys-com). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #155f8a: 4 real palettes, including Venmo's brand system and Deep Water, as the supporting colour. Seen in: Venmo (https://brandsweets.com/colors/brands/venmo-com), Deep Water (https://brandsweets.com/palettes/dark#deep-water), Lamborghini (https://brandsweets.com/colors/brands/lamborghini-com), Astro (https://brandsweets.com/colors/brands/astro-build). — https://brandsweets.com/colors/deepskyblue
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #155f8a: 6 real palettes, including Wendy's's brand system and AT&T's brand system, as the supporting colour. Seen in: Wendy's (https://brandsweets.com/colors/brands/wendys-com), AT&T (https://brandsweets.com/colors/brands/att-com), Campbell's (https://brandsweets.com/colors/brands/campbells-com), Fireside (https://brandsweets.com/palettes/dark#fireside). — https://brandsweets.com/colors/firebrick

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

- On white (#ffffff): 6.92:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #145c85 (7.24:1)
- On black (#000000): 3.04:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #1b7db6 (4.66:1); AA: background → #d1d1d1 (4.53:1); AAA: text → #2e9fe0 (7.15:1)

## Brands using this color

- **Capital One** — secondary #255f82 (Δ 1.545) — https://brandsweets.com/colors/brands/capitalone-com
- **Motorola** — accent #0d5c91 (Δ 1.663) — https://brandsweets.com/colors/brands/motorola-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/155f8a-9cb1c4-df4e5f-1f222d-e9f1f0?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: "#155f8a" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.