#11DDDDFish Boy (#11DDDD) is a light, saturated blue-green with an OKLCH hue of 195°, lightness 0.81 and chroma 0.137. 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 | #11DDDD |
|---|---|
| RGB | rgb(17, 221, 221) |
| HSL | hsl(180, 86%, 47%) |
| HSV | hsv(180, 92%, 87%) |
| CMYK | cmyk(92%, 0%, 0%, 13%) |
| CIE Lab | lab(80.2 -42.7 -12.6) |
| OKLCH | oklch(0.813 0.137 195) |
Under warm 2700K interior light Fish Boy shifts subtly: leans toward green, loses intensity; in north-facing or shaded light it is virtually unchanged. Overall drift across common illuminants is small (max ΔE ≈ 2.4), so it is a lighting-stable choice.
#4cd8cf — ΔE 2.4, shifts subtly: leans toward green, loses intensity#37ded9 — ΔE 1.1, shifts subtly: leans toward green#11dddd — ΔE 0.0, is virtually unchanged#00dee0 — ΔE 0.4, is virtually unchangedTest Fish Boy 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 1.69:1 and against black 12.41:1, 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 · #11dddd · #00b9b9 · #008f8f · #006767 · #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.
#cdefff · #70e9ff · #11dddd · #31c9b0 · #4bb387 · #5c9c63
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.
#11dddd · #80a7cc · #009797 · #006baf · #005757 · #073355
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.
#c7efee · #11dddd · #d06470 · #186c6c · #004b4b · #002c2c
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#11dddd · #b1a1a2 · #627979 · #4d4243 · #052121 · #050101
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 · #351f21 · #110103 · #11dddd
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#11dddd · #be9c9d · #aa565f · #7e172d · #3d000d · #000202
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#dddeb8 · #11dddd · #de8fb2 · #9f7f6c · #4c353c · #041209
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#11dddd · #b09eb8 · #8c5fa0 · #5f3e00 · #2a1800 · #04000a
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#11dddd · #a2a3bf · #6d69b1 · #7e172d · #201d00 · #180002
#54E3E2 · #76E8E8 · #92EEED · #ABF3F2 · #C2F9F8
#00B5B5 · #008E8E · #006969 · #004646 · #002626
#5ED8D7 · #82D2D2 · #9DCDCC
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.