Harbor Night
Long sessionsA night-shift tool where the brightest step still sits below mid grey.
Click a swatch to copy its hex.
Do not use this for
Any screen read in daylight — the top step is too dark to be a page.
What was measured
- Closest neighbours
- ΔE00 11.3
- how alike two adjacent swatches look
- Darkest to lightest
- 6.11:1
- WCAG contrast across the set
- Lightness covered
- 49 pts
- of OKLCH lightness, 0–100
- Under colour blindness
- ΔE00 11.1
- worst under deuteranopia
These two are one colour to a reader with deuteranopia. 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.
/* Harbor Night — A night-shift tool where the brightest step still sits below mid grey. */
:root {
--palette-1: #001219;Tailwind
// tailwind.config — Harbor Night
export default {
theme: {For your coding agent · printed from the colours
Use the Harbor Night palette: #001219, #003145, #165077, #557092, #8792AA. It is for this: A night-shift tool where the brightest step still sits below mid grey.
How this palette was built · no hex was chosen by hand
The catalog states a recipe — ramp from hue 243 — 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.