# #155af9

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

## Values

- Hex: `#155af9`
- RGB: rgb(21, 90, 249)
- HSL: hsl(222, 95%, 53%)
- OKLCH: oklch(0.538 0.245 263.1)
- Relative luminance: 0.1431
- Nearest named color: Blue Ribbon (#0066ff, Δ 2.717) — https://brandsweets.com/colors/blue-ribbon
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/155af9

## Tints & shades

- Tints (toward white): #2e6bfa, #4279fa, #5b8bfb, #6f99fb, #88abfc, #9cb9fc, #b4cafd, #c8d8fe, #e1eafe, #f5f8ff
- Shades (toward black): #064cef, #0544d6, #053cbd, #0434a4, #042e90, #032677, #021e5e, #021646, #010e2d, #010614

## Harmonies

- Complementary: #f9b515
- Analogous: #15cbf9, #4315f9
- Triadic: #f9155a, #5af915
- Split-complementary: #f94315, #cbf915
- Tetradic: #f915cb, #f9b515, #15f943

## Colors that go with #155af9

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 #155af9: 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 #155af9 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Toyota (https://brandsweets.com/colors/brands/toyota-com), Chase (https://brandsweets.com/colors/brands/chase-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 #155af9 in 6 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), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 9 real palettes, including Dropbox's brand system and Headspace's brand system put Blue beside #155af9, as the accent. Seen in: Dropbox (https://brandsweets.com/colors/brands/dropbox-com), Headspace (https://brandsweets.com/colors/brands/headspace-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 #155af9: 10 real palettes, including Nokia's brand system and Nivea's brand system, as the lead colour. Seen in: Nokia (https://brandsweets.com/colors/brands/nokia-com), Nivea (https://brandsweets.com/colors/brands/nivea-com), NHL (https://brandsweets.com/colors/brands/nhl-com), Behance (https://brandsweets.com/colors/brands/behance-net). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #155af9: 7 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), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social). — https://brandsweets.com/colors/cornflowerblue
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #155af9: 6 real palettes, including Elastic's brand system and Warp's brand system, as the supporting colour. Seen in: Elastic (https://brandsweets.com/colors/brands/elastic-co), Warp (https://brandsweets.com/colors/brands/warp-dev), Calm (https://brandsweets.com/colors/brands/calm-com), Patreon (https://brandsweets.com/colors/brands/patreon-com). — https://brandsweets.com/colors/deepskyblue
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #155af9: 9 real palettes, including OnePlus's brand system and ASUS's brand system, as the supporting colour. Seen in: OnePlus (https://brandsweets.com/colors/brands/oneplus-com), ASUS (https://brandsweets.com/colors/brands/asus-com), HashiCorp (https://brandsweets.com/colors/brands/hashicorp-com), Coursera (https://brandsweets.com/colors/brands/coursera-org). — https://brandsweets.com/colors/dodgerblue

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

- On white (#ffffff): 5.44:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #0647e0 (7.03:1)
- On black (#000000): 3.86:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #2e6bfa (4.6:1); AA: background → #ebebeb (4.56:1); AAA: text → #6592fb (7.06:1)

## Brands using this color

- **Zoom** — primary #0b5cff (Δ 1.016) — https://brandsweets.com/colors/brands/zoom-us
- **Zoom** — secondary #0b5cff (Δ 1.016) — https://brandsweets.com/colors/brands/zoom-us
- **Bose** — secondary #005bff (Δ 1.032) — https://brandsweets.com/colors/brands/bose-com
- **Nokia** — accent #005aff (Δ 1.035) — https://brandsweets.com/colors/brands/nokia-com
- **Grafana Labs** — primary #1b55f5 (Δ 1.205) — https://brandsweets.com/colors/brands/grafana-com
- **Grafana Labs** — accent #1b55f5 (Δ 1.205) — https://brandsweets.com/colors/brands/grafana-com
- **Spectrum** — accent #005eff (Δ 1.265) — https://brandsweets.com/colors/brands/spectrum-com
- **Toyota** — accent #145fff (Δ 1.441) — https://brandsweets.com/colors/brands/toyota-com
- **Framer** — primary #0055ff (Δ 1.546) — https://brandsweets.com/colors/brands/framer
- **Cisco** — secondary #0a60ff (Δ 1.564) — https://brandsweets.com/colors/brands/cisco-com
- **Nivea** — secondary #0f60ff (Δ 1.581) — https://brandsweets.com/colors/brands/nivea-com
- **Dropbox** — secondary #0061fe (Δ 1.655) — https://brandsweets.com/colors/brands/dropbox-com
- **Dropbox** — primary #0061ff (Δ 1.732) — https://brandsweets.com/colors/brands/dropbox-com
- **OnePlus** — accent #2660f5 (Δ 1.828) — https://brandsweets.com/colors/brands/oneplus-com
- **IBM** — accent #0062fe (Δ 1.845) — https://brandsweets.com/colors/brands/ibm-com
- **Chase** — secondary #0060f0 (Δ 1.856) — https://brandsweets.com/colors/brands/chase-com
- **IBM** — secondary #0f62fe (Δ 1.886) — https://brandsweets.com/colors/brands/ibm-com
- **Docker** — secondary #2560ff (Δ 1.991) — https://brandsweets.com/colors/brands/docker-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/155af9-9ca3c4-df6e4e-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: "#155af9" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.