Switchboard
Back officeDispatch consoles and ops dashboards where a dark, warm-neutral ground keeps indicator lamps readable for hours.
Click a swatch to copy its hex.
Do not use this for
Print and daylight documents, where the dark anchor turns into ink soup on paper.
What was measured
- Closest neighbours
- ΔE00 9.3
- how alike two adjacent swatches look
- Darkest to lightest
- 4.74:1
- WCAG contrast across the set
- Lightness covered
- 48 pts
- of OKLCH lightness, 0–100
- Under colour blindness
- ΔE00 8.3
- worst under protanopia
These two are one colour to a reader with protanopia. Fine while the set is read as an order; never use them to mean two different things without a label or an icon as well.
A suggested mapping · derived, then measured
Five colours are not an interface, so this is an offer rather than a token set. It does not clear WCAG AA on secondary text and the accent — stated here rather than left for you to discover.
/* Switchboard — Dispatch consoles and ops dashboards where a dark, warm-neutral ground keeps indicator lamps readable for hours. */
:root {Tailwind
// tailwind.config — Switchboard
export default {
theme: {For your coding agent · printed from the colours
Use the Switchboard palette: #090200, #2C1302, #4F2E1F, #6C5049, #887573. It is for this: Dispatch consoles and ops dashboards where a dark, warm-neutral ground keeps indicator lamps readable for hours.
How this palette was built · no hex was chosen by hand
The catalog states a recipe — ramp from hue 45 — and the five colours are derived from it in OKLCH, where a step of lightness is a step your eye agrees with rather than one the hex numbers agree with. That is why the numbers above are properties of this palette rather than claims about it.