# #155aef

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

## Values

- Hex: `#155aef`
- RGB: rgb(21, 90, 239)
- HSL: hsl(221, 87%, 51%)
- OKLCH: oklch(0.529 0.233 262.7)
- Relative luminance: 0.137
- Nearest named color: Blue Ribbon (#0066ff, Δ 3.582) — https://brandsweets.com/colors/blue-ribbon
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/155aef

## Tints & shades

- Tints (toward white): #2d6bf0, #4078f2, #5889f3, #709af5, #88abf7, #9bb8f8, #b3c9fa, #cbdafb, #dee7fd, #f5f8fe
- Shades (toward black): #0f50db, #0e49c8, #0c40b0, #0b3899, #093186, #08286e, #061f56, #04173e, #03102b, #010713

## Harmonies

- Complementary: #efaa15
- Analogous: #15c7ef, #3d15ef
- Triadic: #ef155a, #5aef15
- Split-complementary: #ef3d15, #c7ef15
- Tetradic: #ef15c7, #efaa15, #15ef3d

## Colors that go with #155aef

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 #155aef: softer than #000 and cool enough to feel like part of the same palette. Seen in: Zoom (https://brandsweets.com/colors/brands/zoom-us), Docker (https://brandsweets.com/colors/brands/docker-com), Campus (https://brandsweets.com/palettes/friendly#campus), HP (https://brandsweets.com/colors/brands/hp-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #155aef — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Chase (https://brandsweets.com/colors/brands/chase-com), Toyota (https://brandsweets.com/colors/brands/toyota-com), Coinbase (https://brandsweets.com/colors/brands/coinbase), WWE (https://brandsweets.com/colors/brands/wwe-com). — https://brandsweets.com/colors/crimson
- **Amber** #ffbf00 [pool] — Amber is paired with #155aef in 8 real palettes, including Walmart's brand system and NBA's brand system, as the accent. Seen in: Walmart (https://brandsweets.com/colors/brands/walmart-com), NBA (https://brandsweets.com/colors/brands/nba-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 10 real palettes, including Headspace's brand system and Dropbox's brand system put Blue beside #155aef, as the accent. Seen in: Headspace (https://brandsweets.com/colors/brands/headspace-com), Dropbox (https://brandsweets.com/colors/brands/dropbox-com), Signal (https://brandsweets.com/colors/brands/signal-org), MongoDB (https://brandsweets.com/colors/brands/mongodb-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #155aef: 15 real palettes, including NHL's brand system and Nokia's brand system, as the accent. Seen in: NHL (https://brandsweets.com/colors/brands/nhl-com), Nokia (https://brandsweets.com/colors/brands/nokia-com), Nivea (https://brandsweets.com/colors/brands/nivea-com), Behance (https://brandsweets.com/colors/brands/behance-net). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #155aef: 10 real palettes, including Roblox's brand system and Webflow's brand system, as the supporting colour. Seen in: Roblox (https://brandsweets.com/colors/brands/roblox-com), Webflow (https://brandsweets.com/colors/brands/webflow-com), NBA (https://brandsweets.com/colors/brands/nba-com), Gopro (https://brandsweets.com/colors/brands/gopro-com). — https://brandsweets.com/colors/cornflowerblue
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #155aef: 7 real palettes, including Elastic's brand system and Calm's brand system, as the supporting colour. Seen in: Elastic (https://brandsweets.com/colors/brands/elastic-co), Calm (https://brandsweets.com/colors/brands/calm-com), Warp (https://brandsweets.com/colors/brands/warp-dev), Venmo (https://brandsweets.com/colors/brands/venmo-com). — https://brandsweets.com/colors/deepskyblue
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #155aef: 9 real palettes, including OnePlus's brand system and HashiCorp's brand system, as the supporting colour. Seen in: OnePlus (https://brandsweets.com/colors/brands/oneplus-com), HashiCorp (https://brandsweets.com/colors/brands/hashicorp-com), ASUS (https://brandsweets.com/colors/brands/asus-com), Coursera (https://brandsweets.com/colors/brands/coursera-org). — https://brandsweets.com/colors/dodgerblue

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

- On white (#ffffff): 5.61:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #0f4cd2 (7.04:1)
- On black (#000000): 3.74:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #326ef1 (4.64:1); AA: background → #e8e8e8 (4.58:1); AAA: text → #6693f4 (7.04:1)

## Brands using this color

- **Chase** — secondary #0060f0 (Δ 1.309) — https://brandsweets.com/colors/brands/chase-com
- **Grafana Labs** — primary #1b55f5 (Δ 1.338) — https://brandsweets.com/colors/brands/grafana-com
- **Grafana Labs** — accent #1b55f5 (Δ 1.338) — https://brandsweets.com/colors/brands/grafana-com
- **Headspace** — secondary #0061ef (Δ 1.515) — https://brandsweets.com/colors/brands/headspace-com
- **NHL** — secondary #0055e9 (Δ 1.748) — https://brandsweets.com/colors/brands/nhl-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/155aef-9ca4c4-df6b4e-211f2d-e9eff1?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: "#155aef" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.