# #040e25

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

## Values

- Hex: `#040e25`
- RGB: rgb(4, 14, 37)
- HSL: hsl(222, 80%, 8%)
- OKLCH: oklch(0.17 0.051 262.2)
- Relative luminance: 0.0047
- Nearest named color: Mysterious Depths (#060929, Δ 1.85) — https://brandsweets.com/colors/mysterious-depths
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/040e25

## Tints & shades

- Tints (toward white): #091d4e, #0d2d77, #123da1, #164cca, #2761e7, #517fec, #7a9df0, #a3bcf5, #cddaf9, #f6f8fe
- Shades (toward black): #040e25, #040c20, #040c20, #030a1c, #030a1c, #030a1c, #030917, #030917, #020712, #020712

## Harmonies

- Complementary: #251b04
- Analogous: #041e25, #0b0425
- Triadic: #25040e, #0e2504
- Split-complementary: #250b04, #1e2504
- Tetradic: #25041e, #251b04, #04250b

## Colors that go with #040e25

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 #040e25: softer than #000 and cool enough to feel like part of the same palette. Seen in: Amazon (https://brandsweets.com/colors/brands/amazon-com), Bloomberg (https://brandsweets.com/colors/brands/bloomberg-com), Codecademy (https://brandsweets.com/colors/brands/codecademy-com), dbt Labs (https://brandsweets.com/colors/brands/getdbt-com). — https://brandsweets.com/colors/charcoal
- **Dark Olive Green** #556b2f [harmony, pool: split] — Dark Olive Green is a split-complement of #040e25: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Cohere (https://brandsweets.com/colors/brands/cohere-com), Miro (https://brandsweets.com/colors/brands/miro-com), Warp (https://brandsweets.com/colors/brands/warp-dev), Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre). — https://brandsweets.com/colors/darkolivegreen
- **Rust** #b7410e [harmony, pool: triadic] — Rust completes a triad with #040e25 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Semrush (https://brandsweets.com/colors/brands/semrush-com), Wayfair (https://brandsweets.com/colors/brands/wayfair-com), Noir Beauty (https://brandsweets.com/palettes/dark#noir-beauty), Gallery (https://brandsweets.com/palettes/editorial#gallery). — https://brandsweets.com/colors/rust
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #040e25 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Intel (https://brandsweets.com/colors/brands/intel-com), Kia (https://brandsweets.com/colors/brands/kia-com), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Paramount+ (https://brandsweets.com/colors/brands/paramountplus-com). — https://brandsweets.com/colors/seagreen
- **Sienna** #a0522d [harmony, pool: split] — Sienna is a split-complement of #040e25: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Oatly (https://brandsweets.com/colors/brands/oatly-com), Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke), BrandSweets (https://brandsweets.com/colors/brands/brandsweets). — https://brandsweets.com/colors/sienna
- **Slate Blue** #6a5acd [harmony, pool: analogous] — Slate Blue is #040e25's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Sentry (https://brandsweets.com/colors/brands/sentry-io), Indigo SaaS (https://brandsweets.com/palettes/modern#indigo-saas), Linear (https://brandsweets.com/colors/brands/linear), Calm (https://brandsweets.com/colors/brands/calm-com). — https://brandsweets.com/colors/slateblue
- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #040e25's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Olympics (https://brandsweets.com/colors/brands/olympics-com), American Express (https://brandsweets.com/colors/brands/americanexpress-com), Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/steelblue
- **Amber** #ffbf00 [pool] — Amber is paired with #040e25 in 17 real palettes, including Southwest Airlines's brand system and Blueprint, as the accent. Seen in: Southwest Airlines (https://brandsweets.com/colors/brands/southwest-com), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com). — https://brandsweets.com/colors/amber

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

- On white (#ffffff): 19.18:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.09:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #3a6ee9 (4.59:1); AA: background → #7d7d7d (4.66:1); AAA: text → #6c93ef (7.06:1); AAA: background → #9e9e9e (7.16:1)

## Brands using this color

- **Intel** — text #000f28 (Δ 0.962) — https://brandsweets.com/colors/brands/intel-com
- **Twilio** — text #000d25 (Δ 1.018) — https://brandsweets.com/colors/brands/twilio-com
- **Southwest Airlines** — primary #090f23 (Δ 1.131) — https://brandsweets.com/colors/brands/southwest-com
- **Southwest Airlines** — text #090f23 (Δ 1.131) — https://brandsweets.com/colors/brands/southwest-com

## 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/040e25-9ca3c4-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: "#040e25" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.