#191970Midnight Blue (#191970) is a very dark, saturated blue with an OKLCH hue of 273°, lightness 0.29 and chroma 0.144. 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 | #191970 |
|---|---|
| RGB | rgb(25, 25, 112) |
| HSL | hsl(240, 64%, 27%) |
| HSV | hsv(240, 78%, 44%) |
| CMYK | cmyk(78%, 78%, 0%, 56%) |
| CIE Lab | lab(15.9 31.7 -49.6) |
| OKLCH | oklch(0.288 0.144 273) |
Under warm 2700K interior light Midnight Blue shifts subtly: leans toward purple; in north-facing or shaded light it is virtually unchanged. Overall drift across common illuminants is small (max ΔE ≈ 1.4), so it is a lighting-stable choice.
#1d1a69 — ΔE 1.4, shifts subtly: leans toward purple#1c1a6e — ΔE 0.6, shifts subtly: leans toward purple#191970 — ΔE 0.0, is virtually unchanged#191972 — ΔE 0.4, is virtually unchangedTest Midnight Blue 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 14.85:1 and against black 1.41:1, 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.
#8696d4 · #606fb4 · #3c4995 · #191970 · #0a004a · #010011
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.
#004f78 · #003779 · #191970 · #210056 · #1b0032 · #100016
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.
#d4a9d6 · #8395e2 · #a65bab · #4a58a4 · #58365a · #191970
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.
#e4c145 · #58638f · #3f465f · #191970 · #080a33 · #01000d
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#f6f2e3 · #adb2c6 · #7b786e · #3c4155 · #191970 · #191509
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.
#f5f2e6 · #cfcbbe · #a5a192 · #322d1a · #110b00 · #191970
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#c0dfc4 · #a5c536 · #8161ab · #2f402e · #191970 · #04101a
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#fcf2d2 · #e7a262 · #698400 · #623500 · #191970 · #111900
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#ffede9 · #f39783 · #108f4c · #005027 · #191970 · #2f0400
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#ffecf0 · #f093ac · #907500 · #004d45 · #191970 · #1d1500
#333F8B · #5362A6 · #7685C1 · #9CA9DC · #C3CEF6
#151463 · #100F56 · #0C0A49 · #08053D · #050331
#1B2162 · #1E2653 · #222945
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.