#66CCCCPetrichor (#66CCCC) is a light, soft blue-green with an OKLCH hue of 195°, lightness 0.78 and chroma 0.095. 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 | #66CCCC |
|---|---|
| RGB | rgb(102, 204, 204) |
| HSL | hsl(180, 50%, 60%) |
| HSV | hsv(180, 50%, 80%) |
| CMYK | cmyk(50%, 0%, 0%, 20%) |
| CIE Lab | lab(76.3 -29.6 -9.1) |
| OKLCH | oklch(0.785 0.095 195) |
Under warm 2700K interior light Petrichor shifts subtly: leans toward green, loses intensity; in north-facing or shaded light it shifts subtly: leans toward sky blue. Overall drift across common illuminants is small (max ΔE ≈ 2.2), so it is a lighting-stable choice.
#78c7bf — ΔE 2.2, shifts subtly: leans toward green, loses intensity#71cdc8 — ΔE 1.1, shifts subtly: leans toward green#66cccc — ΔE 0.0, is virtually unchanged#65cdcf — ΔE 0.4, shifts subtly: leans toward sky blueTest Petrichor 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 1.9:1 and against black 11.07:1, so black text is the stronger pairing. That pairing passes WCAG AA for body text. Avoid white 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.
#c4fffe · #66cccc · #52b4b4 · #308c8d · #056667 · #004141
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.
#b6e8ff · #87dbec · #66cccc · #62b8a7 · #62a486 · #638e68
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.
#66cccc · #839db6 · #358b8b · #2c6392 · #004e4f · #122c42
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.
#c8e3e2 · #66cccc · #bd7278 · #306060 · #154141 · #072323
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#fbeeef · #66cccc · #90a1a0 · #645c5c · #192a2a · #030101
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.
#fceeee · #d6c5c6 · #ab9899 · #342021 · #100203 · #66cccc
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#ffeded · #66cccc · #c88a8d · #8c464c · #461119 · #000202
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#ffeded · #66cccc · #c08aa7 · #8a4b2d · #41132f · #180300
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#f9edff · #66cccc · #af8fbd · #7d5610 · #372200 · #030006
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#f0f0ff · #66cccc · #9896cb · #8c464c · #2b2800 · #0d0001
#7ED4D4 · #93DCDB · #A8E4E3 · #BBECEB · #CFF3F3
#4AA8A8 · #2F8585 · #0F6464 · #004444 · #002525
#7DC8C8 · #90C4C4 · #A0C0C0
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.