# #5901b2

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

## Values

- Hex: `#5901b2`
- RGB: rgb(89, 1, 178)
- HSL: hsl(270, 99%, 35%)
- OKLCH: oklch(0.407 0.224 294.7)
- Relative luminance: 0.0536
- Nearest named color: Intergalactic Settlement (#5b1e8b, Δ 6.732) — https://brandsweets.com/colors/intergalactic-settlement
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/5901b2

## Tints & shades

- Tints (toward white): #6901d0, #7a01f4, #8a16fe, #9934fe, #ab58fe, #ba76fe, #c994fe, #d9b3ff, #ebd6ff, #faf5ff
- Shades (toward black): #5201a2, #4a0193, #420184, #3b0175, #330165, #290051, #210042, #1a0033, #120024, #0a0014

## Harmonies

- Complementary: #59b201
- Analogous: #0101b2, #b201b2
- Triadic: #b25901, #01b259
- Split-complementary: #b2b201, #01b201
- Tetradic: #b20101, #59b201, #01b2b2

## Colors that go with #5901b2

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

- **Olive Green** #808000 [harmony: complementary] — Olive Green sits directly opposite #5901b2 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
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #5901b2: softer than #000 and cool enough to feel like part of the same palette. Seen in: dbt Labs (https://brandsweets.com/colors/brands/getdbt-com). — https://brandsweets.com/colors/charcoal
- **Tomato** #ff6347 [pool] — 3 real palettes, including FedEx's brand system and dbt Labs's brand system put Tomato beside #5901b2, as the supporting colour. Seen in: FedEx (https://brandsweets.com/colors/brands/fedex-com), dbt Labs (https://brandsweets.com/colors/brands/getdbt-com), GitLab (https://brandsweets.com/colors/brands/gitlab). — https://brandsweets.com/colors/tomato
- **Teal** #008080 [harmony, pool: triadic] — Teal completes a triad with #5901b2 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone). — https://brandsweets.com/colors/teal
- **Forest Green** #228b22 [harmony: split] — Forest Green is a split-complement of #5901b2: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/forestgreen
- **Royal Blue** #4169e1 [harmony, pool: analogous] — Royal Blue is #5901b2's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Wayfair (https://brandsweets.com/colors/brands/wayfair-com). — https://brandsweets.com/colors/royalblue
- **Blue Violet** #8a2be2 [pool] — Blue Violet is paired with #5901b2 in two real palettes: Twitch's brand system and Taco Bell's brand system, as the lead colour. Seen in: Twitch (https://brandsweets.com/colors/brands/twitch-tv), Taco Bell (https://brandsweets.com/colors/brands/tacobell-com). — https://brandsweets.com/colors/blueviolet
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #5901b2: two real palettes: Zillow's brand system and Unilever's brand system, as the supporting colour. Seen in: Zillow (https://brandsweets.com/colors/brands/zillow-com), Unilever (https://brandsweets.com/colors/brands/unilever-com). — https://brandsweets.com/colors/cobalt

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

- On white (#ffffff): 10.14:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.07:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #9e3efe (4.57:1); AA: background → #adadad (4.52:1); AAA: text → #ba76fe (7.11:1); AAA: background → #d9d9d9 (7.18:1)

## Brands using this color

- **Zillow** — accent #6000b6 (Δ 1.565) — https://brandsweets.com/colors/brands/zillow-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/5901b2-b59cc4-c9cb62-2c1f2d-eae9f1?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: "#5901b2" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.