#99CCEEFail Whale (#99CCEE) is a very light, soft sky blue with an OKLCH hue of 238°, lightness 0.82 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 | #99CCEE |
|---|---|
| RGB | rgb(153, 204, 238) |
| HSL | hsl(204, 71%, 77%) |
| HSV | hsv(204, 36%, 93%) |
| CMYK | cmyk(36%, 14%, 0%, 7%) |
| CIE Lab | lab(79.7 -8.4 -22.1) |
| OKLCH | oklch(0.821 0.072 238) |
Under warm 2700K interior light Fail Whale shifts subtly: loses intensity; in north-facing or shaded light it is virtually unchanged. Overall drift across common illuminants is small (max ΔE ≈ 2.3), so it is a lighting-stable choice.
#a5c8df — ΔE 2.3, shifts subtly: loses intensity#a1cde9 — ΔE 1.2, shifts subtly: leans toward blue-green#99ccee — ΔE 0.0, is virtually unchanged#98cdf1 — ΔE 0.4, is virtually unchangedTest Fail Whale 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 1.72:1 and against black 12.23:1, 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.
#e5f4ff · #99ccee · #7aa9c8 · #59829e · #395e76 · #1b3c50
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.
#aee1f4 · #99ccee · #93b4de · #8e9dc9 · #8987b2 · #817398
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.
#99ccee · #a4a2bc · #628da9 · #696292 · #2b526a · #333047
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.
#dbebf6 · #99ccee · #c69773 · #6a8597 · #4d6474 · #36454f
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#99ccee · #ada7a2 · #6e777d · #4a4642 · #151e24 · #040201
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.
#f8f0ea · #d2c8c2 · #a79d95 · #32261d · #100601 · #99ccee
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#dfe3be · #99ccee · #bd883a · #6a6896 · #533331 · #041012
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#99ccee · #b4a59b · #966862 · #57440b · #350e0a · #0b0500
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#99ccee · #b5a3a8 · #936775 · #434c17 · #1a2000 · #040001
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#99ccee · #b0a3af · #896988 · #643b19 · #012409 · #120400
#A7D3F1 · #B4DBF5 · #C1E2F8 · #CFE9FB · #DCF0FE
#79A7C5 · #5B839E · #3D6178 · #224155 · #082333
#A3CBE5 · #ADC9DD · #B6C7D4
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.