Liquid Lava

#f77511

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

Hex

#f77511

RGB

247, 117, 17

OKLCh

70.5% 0.184 49.2°

CIELAB (D50)

64.5, 47.7, 69.6

What is true of this colour, and of no other

14 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 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 53.1; on black, Lc -48.7. 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 33.7 and 34.6 and 36.9 — no red cone.

Text on this colour

White text

2.80:1 — fails AA

Black text

7.51:1 — passes AA

Black text is the better of the two at7.51:1. That is enough for body text.

As text on white, it needs to change

#c15800 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

#f77511

protanopia

#8c8c17 · ΔE00 33.7

deuteranopia

#a9a900 · ΔE00 34.6

tritanopia

#c4c400 · ΔE00 36.9

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isFire Dragon Bright at ΔE00 0.54: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

Fire Dragon BrightΔE00 0.54 · #f97306
Butternut SquashΔE00 1.088 · #fc7604
Philippine OrangeΔE00 1.381 · #ff7300
March Hare OrangeΔE00 1.421 · #ff750f
Sparks in the DarkΔE00 1.468 · #ff7711
Sun OrangeΔE00 1.537 · #f37724
Orange PopsicleΔE00 1.657 · #ff7913
Lucky OrangeΔE00 1.664 · #ff7700
Supernatural SaffronΔE00 1.743 · #ef760e
Orange GluttonyΔE00 1.757 · #ee7722
PumpkinΔE00 1.778 · #ff7518
Ornery TangerineΔE00 1.792 · #f77d25

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