# #21027e

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

## Values

- Hex: `#21027e`
- RGB: rgb(33, 2, 126)
- HSL: hsl(255, 97%, 25%)
- OKLCH: oklch(0.288 0.175 277.2)
- Relative luminance: 0.0187
- Nearest named color: Child of the Night (#220077, Δ 1.378) — https://brandsweets.com/colors/child-of-the-night
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/21027e

## Tints & shades

- Tints (toward white): #2a02a1, #3503c9, #3e04ec, #5118fb, #6f40fc, #8a63fd, #a486fd, #bfaafe, #ddd2fe, #f7f5ff
- Shades (toward black): #1e0274, #1c0269, #19015f, #160155, #14014b, #10013c, #0d0132, #0b0128, #08001e, #050014

## Harmonies

- Complementary: #5f7e02
- Analogous: #02217e, #5f027e
- Triadic: #7e2102, #027e21
- Split-complementary: #7e5f02, #217e02
- Tetradic: #7e0221, #5f7e02, #027e5f

## Colors that go with #21027e

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 #21027e: 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), Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/charcoal
- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #21027e's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Deep Water (https://brandsweets.com/palettes/dark#deep-water), Glacier (https://brandsweets.com/palettes/cool#glacier), Hershey's (https://brandsweets.com/colors/brands/hersheys-com), FedEx (https://brandsweets.com/colors/brands/fedex-com). — https://brandsweets.com/colors/steelblue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #21027e: 5 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
- **Crimson** #dc143c [pool] — Crimson is paired with #21027e in 4 real palettes, including Pepsi's brand system and Nintendo's brand system, as the supporting colour. 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
- **Denim** #1560bd [pool] — Designers have shipped Denim with #21027e: 5 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), Skechers (https://brandsweets.com/colors/brands/skechers-com), British Airways (https://brandsweets.com/colors/brands/britishairways-com). — https://brandsweets.com/colors/denim
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #21027e in 4 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), Spectrum (https://brandsweets.com/colors/brands/spectrum-com). — https://brandsweets.com/colors/royalblue
- **Olive Green** #808000 [harmony: complementary] — Olive Green sits directly opposite #21027e 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
- **Light Sea Green** #20b2aa [pool] — Light Sea Green shows up next to #21027e in 3 real palettes, including Ford's brand system and Confluent's brand system, as the supporting colour. Seen in: Ford (https://brandsweets.com/colors/brands/ford-com), Confluent (https://brandsweets.com/colors/brands/confluent-io), Taco Bell (https://brandsweets.com/colors/brands/tacobell-com). — https://brandsweets.com/colors/lightseagreen

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

- On white (#ffffff): 15.28:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.37:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #7e54fc (4.56:1); AA: background → #8c8c8c (4.54:1); AAA: text → #a081fd (7.05:1); AAA: background → #b0b0b0 (7.04:1)

## 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/21027e-ab9cc4-dfbd4e-291f2d-e9ebf1?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: "#21027e" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.