Neon Yellow#CFFF04

#CFFF04 is a very light, highly saturated yellow-green. Relative luminance 0.848; OKLCH L 93.3% C 0.227 H 122.4°. Best body text is #000000 at 17.96:1 contrast (WCAG AA passes).

Neon Yellow — editorial page

Color values

HEX	#CFFF04
RGB	rgb(207, 255, 4)
HSL	hsl(71, 100%, 51%)
HSV	hsv(71, 98%, 100%)
CMYK	cmyk(18.8%, 0%, 98.4%, 0%)
CIE-LAB	lab(93.79, -40.75, 90.21)
CIE-LCH	lch(93.79, 98.99, 114.31°)
OKLab	oklab(93.27% -0.1216 0.1915)
OKLCH	oklch(93.27% 0.227 122.4)
XYZ	xyz(61.5152, 84.7939, 13.2409)
Luminance	0.8479 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CFFF04 #3404FF

analogous

#FFB104 #CFFF04 #51FF04

triadic

#CFFF04 #04CFFF #FF04CF

tetradic

#CFFF04 #04FFB1 #3404FF #FF0451

square

#CFFF04 #04FFB1 #3404FF #FF0451

split-complementary

#CFFF04 #0451FF #B104FF

monochromatic

#6E8900 #A0C600 #CFFF04 #DBFF41 #E6FF7E

Accessibility & contrast

On white

1.17

#CFFF04 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.96

#CFFF04 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #CFFF04

17.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CFFF04	#FFFFFF	#000000	##000000
##CFFF04	1.00	1.17	17.96	17.96
#FFFFFF	1.17	1.00	21.00	21.00
#000000	17.96	21.00	1.00	1.00
##000000	17.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEE00

Deuteranopia (green-blind)

#FFED36

Tritanopia (blue-blind)

#DBF1D9

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #cfff04;
/* rgb */ color: rgb(207, 255, 4);
/* oklch */ color: oklch(93.3% 0.227 122.4);

Tailwind

colors: {
  custom: {
    50: '#e3ff72',
    500: '#cfff04',
    950: '#000000',
  },
}

SCSS

$custom: #cfff04;
$custom-light: #e3ff72;
$custom-dark: #000000;

JSON

{
  "hex": "#cfff04",
  "rgb": {
    "r": 207,
    "g": 255,
    "b": 4
  },
  "hsl": {
    "h": 71.474,
    "s": 100,
    "l": 50.784
  },
  "oklch": {
    "l": 0.93272,
    "c": 0.22687,
    "h": 122.4
  },
  "luminance": 0.84794
}

Semantic roles & 50–950 ramp

primary

#CFFF04

secondary

#2F198E

accent

#29FF52

background

#FFFFFB

surface

#FEFFF1

border

#D6D7CB

text

#16180A

muted

#85867D

Preview Lab

Preview with #CFFF04

Body copy rendered with the generated semantic roles for this colour.

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