Color

The hierarchy (4.1 Color System)

Verbatim from the guide:

• White and Conexeu Green are the primary foundation across all applications. These two colors define the majority of the visual field.
• Secondary green tones (CG 1–4) extend the system, providing depth and flexibility. Their use must remain controlled, with total visual presence equal to or less than Conexeu Green.
• Therapeutic colors (Iris, Hydra, Coral, Rose) introduce contrast and meaning. Most effective against white or Conexeu Green. Use on secondary greens is case-by-case, for contrast.
• Gold is a premium accent. Solid and metallic gold work on white or Conexeu Green and must not be combined with secondary green tones. Always sparing, never dominant.

The Conexeu Color Wheel (4.1) states the proportion literally: white and Conexeu Green are the majority, secondary greens add depth, therapeutic colors and gold are slivers.

Primary (4.2)

Gold discrepancy. Gold Solid is #FFD902 in the guide and in the logo artwork. The live site's --gold is #D4A041, which is the first stop of the metallic ramp, not the solid gold. Both are legitimate tokens; the site simply uses metallic-1 where the guide would use solid. Name them distinctly so a build never substitutes one for the other.

Secondary / therapeutic (4.3)

Each family maps to a therapeutic vertical. Mapping read positionally off the column headers on slide 2:3299.

The CXU column is the same ramp as the primary secondary-greens (CG 1–4) — one ramp, two names.

Usage rules (4.4 Secondary Color Usage)

Verbatim: secondary colors "support hierarchy and communicate therapeutic context, not define the overall visual field."

• Default background is white or Conexeu Green. Conexeu Green 1 (#156A5A) may be used selectively when additional variation is needed.
• Secondary colors as a background only in limited cases — infographics, multi-page documents — and then only the 3 and 4 stops, always with restraint.
• Approved pairings published in the guide: BG: white / CG / {family} 2, BG: CG / {family} 3, BG: CG 1 / {family} 3, BG: {family} 3 / {family} 1, BG: {family} 4 / {family} 1.
• 4.5 shows the pairings in practice on the "Architects of …" card: solid color panel, IvyPresto title, circular line icon top-right, Conexeu wordmark bottom-right, image block below.

Measured contrast (computed 2026-08-21, WCAG 2.1 sRGB)

The guide publishes no contrast grid. These are computed, not asserted.

Two of the guide's own published tint-on-tint pairings fail AA for body copy (Coral and Rose). Use them for display type at 24px+/bold only, or darken the foreground. This is a guardrail, not a licence to invent new hexes.

Live-site extensions not in the guide

conexeu.com serves greens the 2026 guide does not contain. They are production reality, so they are recorded here, but they are not canon for new work:

--dark-teal-green #042A23 (deepest ground), --green-pine-forest #0B463B, --light-green #0A7561, --medium-green #499486, --border-green #2A695D, --deep-sea-green #0D9279 (= CG 2), --_color---pearl #F8F7F3, --_color---charcoal-gray #585858, --_color---light-gray #ACACAC.

Reconcile at the next site pass: either fold #042A23 and #0B463B into the guide as named ground tokens, or retire them for #0E443A. Do not silently pick one.