#220033Coal Mine (#220033) is a very dark, soft purple with an OKLCH hue of 311°, lightness 0.19 and chroma 0.097. It sits on the transitional side of the color wheel. In practice it behaves as a grounding tone — suited to text, outlines, and shadowed surfaces.
| HEX | #220033 |
|---|---|
| RGB | rgb(34, 0, 51) |
| HSL | hsl(280, 100%, 10%) |
| HSV | hsv(280, 100%, 20%) |
| CMYK | cmyk(33%, 100%, 0%, 80%) |
| CIE Lab | lab(5.2 26.7 -25) |
| OKLCH | oklch(0.193 0.097 311) |
Under warm 2700K interior light Coal Mine shifts subtly: leans toward pink; in north-facing or shaded light it is virtually unchanged. Overall drift across common illuminants is small (max ΔE ≈ 0.8), so it is a lighting-stable choice.
#22002f — ΔE 0.8, shifts subtly: leans toward pink#230032 — ΔE 0.4, shifts subtly: leans toward pink#220033 — ΔE 0.0, is virtually unchanged#220034 — ΔE 0.2, is virtually unchangedTest Coal Mine in the color lighting simulator — sweep it through daylight, warm 2700K light, 4000K LED, and shade alongside the rest of your palette.
Against white it measures 18.82:1 and against black 1.12:1, so white text is the stronger pairing. That pairing passes WCAG AA for body text. Avoid black text on this color entirely.
One color explored: close hues with real lightness and chroma structure, so the palette is the anchor through value rather than a set of colors.
#a894b6 · #846d94 · #624873 · #422553 · #220033 · #05000d
The anchor's neighbours on the wheel — everything shares an undertone, so the chord carries color without anything having to be muted to get along.
#2b5478 · #293f6b · #292a5b · #271549 · #220033 · #150016
The mid-gap pairing — sage and mustard, terracotta and olive. A foil rotated 40–65° toward warm or cool: too far to be kin, too near to argue, carried by temperature and a deliberate value offset.
#ba8f99 · #8d71a0 · #8e485c · #543866 · #40212a · #220033
One deliberately opposed voice — a single restrained counterpoint across the wheel, or temperature against temperature where the anchor is too muted to carry a loud opposite.
#aed28f · #706478 · #54445f · #332a39 · #220033 · #05000b
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#eff4ea · #bfb7c4 · #848881 · #5a5260 · #272b23 · #220033
This color as a ground rather than a subject — its own restraint held across a narrow value band, carrying one saturated voice from the opposite temperature.
#eef4e9 · #c4ccbf · #979f91 · #1d2614 · #010500 · #220033
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#ebf6e2 · #a9c691 · #729353 · #455f2c · #31223b · #220033
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#ebf6e2 · #c5bd82 · #4a9974 · #605717 · #0f3122 · #220033
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#ffefdd · #dbb384 · #289995 · #006360 · #38250b · #220033
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#ffeee7 · #e7ab94 · #729353 · #026076 · #212e14 · #220033
#412553 · #634A74 · #877096 · #AC99B9 · #D3C4DE
#1E012E · #1B0129 · #180124 · #140220 · #11021B
#1F062D · #1C0C26 · #1A1020
As a deep tone it works for grounding elements — text, outlines, and shadowed surfaces — rather than open fields. In palettes it pairs most predictably with its tonal ramp and analogous neighbors; reserve the complementary hue for small, deliberate contrast.