#0018A8Dark Galaxy (#0018A8) is a very dark, vivid blue with an OKLCH hue of 264°, lightness 0.35 and chroma 0.217. It sits on the cool side of the color wheel. In practice it behaves as a grounding tone — suited to text, outlines, and shadowed surfaces.
| HEX | #0018A8 |
|---|---|
| RGB | rgb(0, 24, 168) |
| HSL | hsl(231, 100%, 33%) |
| HSV | hsv(231, 100%, 66%) |
| CMYK | cmyk(100%, 86%, 0%, 34%) |
| CIE Lab | lab(21.9 50.2 -74.7) |
| OKLCH | oklch(0.348 0.217 264) |
Under warm 2700K interior light Dark Galaxy shifts subtly: leans toward purple, loses intensity; in north-facing or shaded light it is virtually unchanged. Overall drift across common illuminants is small (max ΔE ≈ 2), so it is a lighting-stable choice.
#101c9e — ΔE 2.0, shifts subtly: leans toward purple, loses intensity#091ba5 — ΔE 0.9, is virtually unchanged#0018a8 — ΔE 0.0, is virtually unchanged#0017aa — ΔE 0.3, is virtually unchangedTest Dark Galaxy 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 12.38:1 and against black 1.7:1, 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.
#6996f7 · #3e6ddb · #1441bd · #0018a8 · #00004e · #000012
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.
#006387 · #004c82 · #0018a8 · #26007d · #25004f · #1c002a
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.
#cb95e0 · #5788f7 · #a036c3 · #6c3f7d · #0018a8 · #010072
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.
#f7b900 · #5675b7 · #45577c · #0018a8 · #021556 · #000225
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#fcf1db · #abbad6 · #8b8374 · #43526f · #0018a8 · #2b220f
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.
#f7f1e6 · #d1cbbe · #a8a193 · #372e1c · #150c00 · #0018a8
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#c8e2c3 · #ccc037 · #966ea5 · #3d503a · #0018a8 · #041017
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#fff0d3 · #ff9e5a · #838c00 · #7f3d00 · #0018a8 · #232600
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#ffedeb · #ff9892 · #00a022 · #006411 · #0018a8 · #4b0006
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#ffecf3 · #ff91bf · #a77c00 · #00614f · #0018a8 · #302100
#1B48BE · #406CD2 · #668FE7 · #8DB1FA · #BED3FF
#000F94 · #000580 · #00006C · #000056 · #000041
#082A91 · #17337A · #253863
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.