Toxic Latte

#e1f8e7

A green that is nearly neutral — the hue shows only against a true grey. It is very light — it works as a page background, not as text.

Hex

#e1f8e7

RGB

225, 248, 231

OKLCh

95.8% 0.033 153.7°

CIELAB (D50)

95.5, -10.1, 5.5

What is true of this colour, and of no other

15 other named colours sit within ΔE00 2 of it — this part of the space is crowded, and the names here are finer distinctions than most people make.
It uses 49% of the chroma sRGB can show at this lightness and hue.
As text on white it measures APCA Lc 0.0; on black, Lc -99.4. The sign is the polarity, which the WCAG ratio discards.
Built into an eleven-step scale, 10 of the 10 adjacent pairs stay ΔE00 2 apart — see the ramp.
protanopia and deuteranopia and tritanopia shift it by ΔE00 9.2 and 9.6 and 17.9 — no red cone.

Text on this colour

White text

1.12:1 — fails AA

Black text

18.78:1 — passes AA

Black text is the better of the two at18.78:1. That is enough for body text.

As text on white, it needs to change

#677c6d is the nearest colour of the same hue that passes AA on white, at 4.50:1. Only the lightness moved.

Try it against your own background

The same colour, with one cone missing

As you see it

#e1f8e7

protanopia

#f6f6e7 · ΔE00 9.2

deuteranopia

#f2f2e8 · ΔE00 9.6

tritanopia

#ededff · ΔE00 17.9

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isFrozen Civilization at ΔE00 1.135: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.

Frozen CivilizationΔE00 1.135 · #e1f5e5
Treacherous BlizzardΔE00 1.334 · #ddf5e7
Nettle RashΔE00 1.371 · #e4f7e7
Aloe MistΔE00 1.401 · #dcf2e3
Winter MistΔE00 1.437 · #e7fbec
Mint FlashΔE00 1.443 · #dcf4e6
Minified MalachiteΔE00 1.465 · #ddf3e5
Green BrocadeΔE00 1.471 · #daf1e0
Teal TreatΔE00 1.672 · #d9f2e3
After Dinner MintΔE00 1.751 · #e3f5e5
Delicate MintΔE00 1.754 · #ddf3e6
Particle CannonΔE00 1.8 · #def3e6

11 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.