/documd-visuals

Accessible theme

The Okabe–Ito Colour Universal Design set, ordered warm/cool alternating as the CUD guidance prescribes, with the darker blue and orange it recommends for thin marks. Red-versus-green is never the only difference between two categories. Members too light to clear 3.0 on white are declared fill-only, exactly as the CUD page advises — label outside the fill rather than thin the colour into a line.

Preview

The theme in use, as one whole figure rather than a fragment. Eight adjacent stack segments so the ramp can be judged as a set; two levels of surface — the page (surface-0) and the plot panel (surface-1) — each with its line border; ink and muted text; line on the axes; and target / negative as the two dashed thresholds. Rendered by the theme gate like every other block, so a theme with a wrong value cannot ship a plausible-looking preview. What this figure does not reach — surface-2, the derived tints and shades, warning — is in the two tables below.

{
  "width": 640,
  "height": 360,
  "graphic": [
    {"type":"rect","left":0,"top":0,"z":-10,"shape":{"width":640,"height":360},"style":{"fill":"#fbfcfe","stroke":"#737a8a","lineWidth":1}},
    {"type":"rect","left":42,"top":70,"z":-9,"shape":{"width":570,"height":228},"style":{"fill":"#f4f6fa","stroke":"#737a8a","lineWidth":1}}
  ],
  "title": {
    "text": "Quarterly volume by channel",
    "subtext": "all eight categories, adjacent, on this theme’s own surface",
    "left": 14,
    "top": 10,
    "textStyle": {"color":"#292c31","fontSize":15},
    "subtextStyle": {"color":"#575d69","fontSize":11}
  },
  "color": ["#0072b2","#e69f00","#009e73","#d55e00","#56b4e9","#f0e442","#cc79a7","#6e6e6e"],
  "legend": {"bottom":6,"itemWidth":10,"itemHeight":10,"textStyle":{"color":"#292c31","fontSize":10}},
  "grid": {"left":52,"right":18,"top":76,"bottom":52},
  "xAxis": {
    "type": "category",
    "data": ["Q1","Q2","Q3","Q4"],
    "axisLine": {"lineStyle":{"color":"#737a8a"}},
    "axisTick": {"lineStyle":{"color":"#737a8a"}},
    "axisLabel": {"color":"#575d69"}
  },
  "yAxis": {"type":"value","axisLine":{"show":false},"axisLabel":{"color":"#575d69"},"splitLine":{"lineStyle":{"color":"#737a8a"}}},
  "series": [
    {"name":"Direct","type":"bar","stack":"total","barWidth":"52%","itemStyle":{"color":"#0072b2"},"data":[18,31,18,31]},
    {"name":"Partner","type":"bar","stack":"total","barWidth":"52%","itemStyle":{"color":"#e69f00"},"data":[25,38,25,38]},
    {"name":"Search","type":"bar","stack":"total","barWidth":"52%","itemStyle":{"color":"#009e73"},"data":[32,19,32,19]},
    {"name":"Social","type":"bar","stack":"total","barWidth":"52%","itemStyle":{"color":"#d55e00"},"data":[39,26,39,26]},
    {"name":"Email","type":"bar","stack":"total","barWidth":"52%","itemStyle":{"color":"#56b4e9"},"data":[20,33,20,33]},
    {"name":"Referral","type":"bar","stack":"total","barWidth":"52%","itemStyle":{"color":"#f0e442"},"data":[27,40,27,40]},
    {"name":"Events","type":"bar","stack":"total","barWidth":"52%","itemStyle":{"color":"#cc79a7"},"data":[34,21,34,21]},
    {
      "name": "Other",
      "type": "bar",
      "stack": "total",
      "barWidth": "52%",
      "itemStyle": {"color":"#6e6e6e"},
      "data": [41,28,41,28],
      "markLine": {
        "silent": true,
        "symbol": "none",
        "data": [
          {"yAxis":150,"lineStyle":{"type":"dashed","color":"#575d69"},"label":{"color":"#575d69","formatter":"target"}},
          {"yAxis":185,"lineStyle":{"type":"dotted","color":"#d55e00"},"label":{"color":"#575d69","formatter":"limit"}}
        ]
      }
    }
  ]
}

Tokens

text / line / fill are the uses this theme grants the token; sits on is what a text token may be placed on, text on it what may be placed on a fill. The widest use a token may ever be granted is fixed by the contract in palette.md — a theme narrows, it never widens.

Derived colours

Computed from the token values, never hand-picked: tint = mix(#ffffff, family, 18 %), shade = darken the family by 12 % (HSL lightness). The mix base is the theme's ground, not a surface: mixing into a tinted near-white drags every hue towards the same grey and the tints stop being tellable apart. A family has a shade only when this theme lets it be a line — a family too light to be a line is too light to border its own fill, so it takes the neutral line border instead.

Blocks

Copy-paste blocks for this theme. Use exactly one block per figure; mixing blocks, or adding a hex of your own on top, gives up the consistency the theme exists for. Every value is literal — no alias layer, here or in any other theme.

plantuml · structure

structure, class, component, deployment. One block per diagram. This is the UML family — @startmindmap, @startgantt, @startpacketdiag and @startwbs ignore skinparam entirely (measured: byte-identical output with and without it). Package carries two lines rather than three: PackageFontColor is a measured no-op.

skinparam RectangleBackgroundColor #f4f6fa
skinparam RectangleBorderColor #737a8a
skinparam RectangleFontColor #292c31
skinparam ComponentBackgroundColor #f4f6fa
skinparam ComponentBorderColor #737a8a
skinparam ComponentFontColor #292c31
skinparam ClassBackgroundColor #f4f6fa
skinparam ClassBorderColor #737a8a
skinparam ClassFontColor #292c31
skinparam UsecaseBackgroundColor #f4f6fa
skinparam UsecaseBorderColor #737a8a
skinparam UsecaseFontColor #292c31
skinparam DatabaseBackgroundColor #f4f6fa
skinparam DatabaseBorderColor #737a8a
skinparam DatabaseFontColor #292c31
skinparam NodeBackgroundColor #f4f6fa
skinparam NodeBorderColor #737a8a
skinparam NodeFontColor #292c31
skinparam ActorBackgroundColor #f4f6fa
skinparam ActorBorderColor #737a8a
skinparam ActorFontColor #292c31
skinparam StateBackgroundColor #f4f6fa
skinparam StateBorderColor #737a8a
skinparam StateFontColor #292c31
skinparam ArtifactBackgroundColor #f4f6fa
skinparam ArtifactBorderColor #737a8a
skinparam ArtifactFontColor #292c31
skinparam CloudBackgroundColor #f4f6fa
skinparam CloudBorderColor #737a8a
skinparam CloudFontColor #292c31
skinparam FolderBackgroundColor #f4f6fa
skinparam FolderBorderColor #737a8a
skinparam FolderFontColor #292c31
skinparam PackageBackgroundColor #f4f6fa
skinparam PackageBorderColor #737a8a
skinparam DefaultFontColor #292c31
skinparam ArrowColor #737a8a
skinparam ArrowFontColor #292c31
skinparam NoteBackgroundColor #e9edf4
skinparam NoteBorderColor #737a8a
skinparam NoteFontColor #292c31
skinparam stereotypeABackgroundColor #d1e6f1
skinparam stereotypeABorderColor #737a8a
skinparam stereotypeCBackgroundColor #d1e6f1
skinparam stereotypeCBorderColor #737a8a
skinparam stereotypeEBackgroundColor #d1e6f1
skinparam stereotypeEBorderColor #737a8a
skinparam stereotypeIBackgroundColor #d1e6f1
skinparam stereotypeIBorderColor #737a8a

plantuml · sequence

sequence. Sequence diagrams take their own participant and lifeline keys; ArrowColor is shared with the structure block.

skinparam DefaultFontColor #292c31
skinparam ArrowColor #737a8a
skinparam ArrowFontColor #292c31
skinparam ParticipantBackgroundColor #f4f6fa
skinparam ParticipantBorderColor #737a8a
skinparam ParticipantFontColor #292c31
skinparam SequenceLifeLineBorderColor #737a8a
skinparam NoteBackgroundColor #e9edf4
skinparam NoteBorderColor #737a8a
skinparam NoteFontColor #292c31

plantuml · activity

activity. Activity steps take their own keys; the diamond is the decision node. A step can also be coloured on its own with :step; <<#fill>> — see the element block.

skinparam DefaultFontColor #292c31
skinparam ArrowColor #737a8a
skinparam ArrowFontColor #292c31
skinparam ActivityBackgroundColor #f4f6fa
skinparam ActivityBorderColor #737a8a
skinparam ActivityDiamondBackgroundColor #e9edf4

plantuml · element

per-element colour. When a block is not enough, colour one element. Use the semicolon form on every shape: #fill;line:border, with no # on the inner value. The ## form is legal on the class family only — on a rectangle, official PlantUML does not error, it appends the suffix to the element name and falls back to an unparsed-colour fill, which is worse than a syntax error.

rectangle "Order service" as svc #d1e6f1;line:00649d
rectangle "Failed batch" as fail #f7e2d1;line:bb5300

infographic · theme

theme block. Paste directly after the infographic <template> line, before data. palette must be a list — one - #hex per line; the space-separated form is a syntax error. Multi-colour templates read the ramp in order; single-colour templates ignore it and derive everything from colorPrimary, which is why one block serves all 113 templates.

theme
  colorPrimary #0072b2
  palette
    - #0072b2
    - #e69f00
    - #009e73
    - #d55e00
    - #56b4e9
    - #f0e442
    - #cc79a7
    - #6e6e6e

echarts · color

colour ramp. One line at the top level of every spec. Multi-series charts take one colour per series; a single series with coloured items (pie, sunburst, treemap, radar) takes one per data item; a plain single-series chart uses only the first. itemStyle.color on a series overrides this ramp.

"color": ["#0072b2", "#e69f00", "#009e73", "#d55e00", "#56b4e9", "#f0e442", "#cc79a7", "#6e6e6e"]

vega-lite · config

config (Vega-Lite). Add as the first key of the spec. This sets the categorical range for every scale that does not declare its own.

"config": { "range": { "category": ["#0072b2", "#e69f00", "#009e73", "#d55e00", "#56b4e9", "#f0e442", "#cc79a7", "#6e6e6e"] } }

vega · scale

ordinal colour scale (Vega). Rewrite the range of the ordinal colour scale the marks reference. Replace the <dataset> / <category field> placeholders with the real names. An explicit scale.range beats config.range.category, so a Vega spec must carry the ramp here.

{ "name": "color", "type": "ordinal", "domain": { "data": "<dataset>", "field": "<category field>" }, "range": ["#0072b2", "#e69f00", "#009e73", "#d55e00", "#56b4e9", "#f0e442", "#cc79a7", "#6e6e6e"] }

html-css · card

card. Bare HTML card, coloured from the theme. The values are literal on purpose: documd-visuals does not follow the host document, so a card looks the same wherever it is pasted.

.card {
  background: #f4f6fa;
  border-left: 4px solid #0072b2;
  color: #292c31;
}
.card .kicker { color: #0072b2; }

html-css · badge

badge. A small status chip: the tint carries the fill, the shade the border, and ink the label.

.badge {
  background: #d1e6f1;
  color: #292c31;
  border: 1px solid #00649d;
}

Verification

Every block above is rendered by the theme gate, which requires the declared values to land and the engine defaults to be gone. The contrast gate recomputes every ratio in the token table against this theme's ground. Both run per theme; see ../palette.md for the contract, and for the per-engine mechanism ../../engines/plantuml.md · ../../engines/echarts.md · ../../engines/vega.md · ../../engines/infographic.md · ../../engines/html-css.md.