Intoxicate

#11bb55

A green that is saturated. It is light — black text sits on it comfortably, white text does not.

Hex

#11bb55

RGB

17, 187, 85

OKLCh

69.3% 0.190 149.4°

CIELAB (D50)

66.7, -57.4, 39.5

What is true of this colour, and of no other

2 other named colours sit within ΔE00 2 of it.
It uses 98% of the chroma sRGB can show at this lightness and hue — close enough to the boundary that a wider display would show it slightly more vividly.
As text on white it measures APCA Lc 49.1; on black, Lc -52.8. 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 22.5 and 21.8 and 53.5 — no red cone.

Text on this colour

White text

2.54:1 — fails AA

Black text

8.26:1 — passes AA

Black text is the better of the two at8.26:1. That is enough for body text.

As text on white, it needs to change

#00893b is the nearest colour of the same hue that passes AA on white, at 4.50:1. Only the lightness moved, and some saturation was given up to stay inside sRGB.

Try it against your own background

The same colour, with one cone missing

As you see it

#11bb55

protanopia

#b1b154 · ΔE00 22.5

deuteranopia

#a0a05a · ΔE00 21.8

tritanopia

#8a8aff · ΔE00 53.5

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isPistou Green at ΔE00 0.273: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

Pistou GreenΔE00 0.273 · #00bb55
Vegan MastermindΔE00 0.506 · #22bb55
Billiards ClothΔE00 2.072 · #01b44c
Lǜ Sè GreenΔE00 2.266 · #02c14d
Classic GreenΔE00 2.281 · #3eb753
Anaheim PepperΔE00 2.315 · #00bb44
Charming NatureΔE00 2.417 · #11bb44
Welsh OnionΔE00 2.696 · #22bb66
Cool GreenΔE00 2.723 · #33b864
Artificial TurfΔE00 2.948 · #41b45c
Green ElliottΔE00 2.968 · #00bb66
Spandex GreenΔE00 3.126 · #36b14e

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