#00718AWaterworld (#00718A) is a mid-tone, soft sky blue with an OKLCH hue of 220°, lightness 0.51 and chroma 0.093. 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 | #00718A |
|---|---|
| RGB | rgb(0, 113, 138) |
| HSL | hsl(191, 100%, 27%) |
| HSV | hsv(191, 100%, 54%) |
| CMYK | cmyk(100%, 18%, 0%, 46%) |
| CIE Lab | lab(43.7 -17.6 -21.3) |
| OKLCH | oklch(0.508 0.093 220) |
Under warm 2700K interior light Waterworld shifts subtly: leans toward blue-green; 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.
#226f81 — ΔE 1.6, shifts subtly: leans toward blue-green#167287 — ΔE 0.9, shifts subtly: leans toward blue-green#00718a — ΔE 0.0, is virtually unchanged#00718c — ΔE 0.3, shifts subtly: leans toward blueTest Waterworld 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 5.63:1 and against black 3.73:1, 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.
#87c5d9 · #569fb5 · #00718a · #005569 · #00323e · #001219
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.
#509791 · #2c858d · #00718a · #185b7e · #22466d · #25325a
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.
#b4bfe2 · #8d9ddb · #79819f · #00718a · #005366 · #003644
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.
#a9d1df · #cb866d · #00718a · #364b52 · #02303c · #00141b
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#faefeb · #abbabf · #857e7b · #00718a · #3f4f55 · #040101
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.
#fbefea · #d6c7c2 · #ac9b96 · #38251e · #140401 · #00718a
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#d2d6b0 · #e6852c · #6377b1 · #00718a · #6c444c · #04110f
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#ffeee7 · #e2a4ac · #a3753d · #00718a · #703942 · #130600
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#ffebf7 · #d8a5c6 · #8c813a · #00718a · #564d10 · #040002
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#f7edff · #c6aadb · #ae6c54 · #00718a · #3e5524 · #130100
#3B879D · #5F9DB1 · #80B4C5 · #A1CBD9 · #C2E2ED
#005E73 · #004B5D · #003947 · #002833 · #001820
#2D6F82 · #416D7B · #506A73
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.