#99BB88Seafoam Green (#99BB88) is a light, soft green with an OKLCH hue of 135°, lightness 0.75 and chroma 0.08. It sits on the transitional side of the color wheel. In practice it behaves as a mid-weight working color for secondary surfaces and editorial blocks.
| HEX | #99BB88 |
|---|---|
| RGB | rgb(153, 187, 136) |
| HSL | hsl(100, 27%, 63%) |
| HSV | hsv(100, 27%, 73%) |
| CMYK | cmyk(18%, 0%, 27%, 27%) |
| CIE Lab | lab(72.3 -21 22.2) |
| OKLCH | oklch(0.754 0.080 135) |
Under warm 2700K interior light Seafoam Green shifts subtly: drifts toward yellow-green; in north-facing or shaded light it is virtually unchanged. Overall drift across common illuminants is small (max ΔE ≈ 1.7), so it is a lighting-stable choice.
#a2b67e — ΔE 1.7, shifts subtly: drifts toward yellow-green#a0bc85 — ΔE 1.0, shifts subtly: drifts toward yellow-green#99bb88 — ΔE 0.0, is virtually unchanged#99bc8a — ΔE 0.3, is virtually unchangedTest Seafoam Green 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 2.14:1 and against black 9.82:1, 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.
#dffcd1 · #b4d5a5 · #99bb88 · #6a875b · #48623b · #293f1e
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.
#aee3cd · #a1d0ab · #99bb88 · #97a36f · #918c5b · #88764d
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.
#99bb88 · #759994 · #617c53 · #00645e · #2c4320 · #002926
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.
#cbd6c6 · #99bb88 · #9a78a8 · #44543b · #283621 · #111a0d
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#f5f0f7 · #99bb88 · #8f968c · #5b575c · #20271d · #010102
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.
#f5eff8 · #cdc6d0 · #a098a4 · #271e2c · #060109 · #99bb88
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#f8edfd · #99bb88 · #a388ae · #6a4a77 · #31183a · #000200
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#f8edfd · #99bb88 · #8f8eb9 · #784663 · #221e43 · #040002
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#e9f3ff · #99bb88 · #7995bb · #7f454a · #3f1419 · #000109
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#e2f6fe · #99bb88 · #679cb1 · #6a4a77 · #3e1703 · #030005
#A7C598 · #B5CFA8 · #C3DAB8 · #D2E4C9 · #E0EED9
#7B9A6C · #5F7A51 · #445B38 · #2A3E20 · #132309
#9EB991 · #A3B699 · #A7B4A1
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.