#376F89Astral (#376F89) is a mid-tone, soft sky blue with an OKLCH hue of 230°, lightness 0.51 and chroma 0.072. It sits on the cool side of the color wheel. In practice it behaves as a mid-weight working color for secondary surfaces and editorial blocks.
| HEX | #376F89 |
|---|---|
| RGB | rgb(55, 111, 137) |
| HSL | hsl(199, 43%, 38%) |
| HSV | hsv(199, 60%, 54%) |
| CMYK | cmyk(60%, 19%, 0%, 46%) |
| CIE Lab | lab(44.2 -10.3 -19.9) |
| OKLCH | oklch(0.515 0.072 230) |
Under warm 2700K interior light Astral shifts subtly: leans toward blue-green, loses intensity; in north-facing or shaded light it shifts subtly: leans toward blue. Overall drift across common illuminants is small (max ΔE ≈ 1.6), so it is a lighting-stable choice.
#426d80 — ΔE 1.6, shifts subtly: leans toward blue-green, loses intensity#3d7086 — ΔE 0.8, shifts subtly: leans toward blue-green#376f89 — ΔE 0.0, is virtually unchanged#366f8b — ΔE 0.3, shifts subtly: leans toward blueTest Astral 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 5.53:1 and against black 3.8:1, so white text is the stronger pairing. That pairing passes WCAG AA for body text.
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.
#99c3d9 · #6e9db5 · #376f89 · #1f546c · #003246 · #00131e
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.
#5e9698 · #468391 · #376f89 · #345a7b · #334669 · #303354
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.
#bec0dd · #9b9ed1 · #81829b · #376f89 · #215268 · #04374a
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.
#b4d1e0 · #cc987b · #376f89 · #3d4b53 · #14303d · #06151c
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#f8f0ec · #798389 · #376f89 · #524d4a · #172227 · #030100
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.
#f9f0eb · #d2c8c2 · #a89c96 · #32251d · #100501 · #376f89
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#d3d9b4 · #e09344 · #777bb1 · #376f89 · #6b4340 · #051212
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#ffeee5 · #a37372 · #376f89 · #644917 · #391112 · #110700
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#ffecf4 · #9e7386 · #376f89 · #51521c · #212200 · #040001
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#f9edfb · #927698 · #376f89 · #6f4126 · #0c2707 · #0f0200
#55859C · #729BB0 · #8FB2C3 · #ACC9D8 · #CAE0EC
#295C73 · #1B4A5F · #0D384A · #012837 · #001824
#446E82 · #4F6C7B · #596B74
Its moderate chroma lets it work in mid-size areas — upholstery, secondary UI surfaces, editorial blocks — without overwhelming neighbors. In palettes it pairs most predictably with its tonal ramp and analogous neighbors; reserve the complementary hue for small, deliberate contrast.