#E4FF63#E4FF63

#E4FF63 is a very light, vivid yellow-green. Relative luminance 0.889; OKLCH L 95.2% C 0.180 H 118.3°. Best body text is #000000 at 18.78:1 contrast (WCAG AA passes).

Color values

HEX	#E4FF63
RGB	rgb(228, 255, 99)
HSL	hsl(70, 100%, 69%)
HSV	hsv(70, 61%, 100%)
CMYK	cmyk(10.6%, 0%, 61.2%, 0%)
CIE-LAB	lab(95.55, -29.25, 69.40)
CIE-LCH	lch(95.55, 75.31, 112.85°)
OKLab	oklab(95.15% -0.0855 0.1588)
OKLCH	oklch(95.15% 0.18 118.3)
XYZ	xyz(70.0082, 88.9154, 25.2763)
Luminance	0.8891 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#E4FF63 #7E63FF

analogous

#FFCC63 #E4FF63 #96FF63

triadic

#E4FF63 #63E4FF #FF63E4

tetradic

#E4FF63 #63FFCC #7E63FF #FF6396

square

#E4FF63 #63FFCC #7E63FF #FF6396

split-complementary

#E4FF63 #6396FF #CC63FF

monochromatic

#C0E800 #D9FF26 #E4FF63 #EFFFA0 #F9FFDD

Accessibility & contrast

On white

1.12

#E4FF63 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.78

#E4FF63 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #E4FF63

18.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##E4FF63	#FFFFFF	#000000	##000000
##E4FF63	1.00	1.12	18.78	18.78
#FFFFFF	1.12	1.00	21.00	21.00
#000000	18.78	21.00	1.00	1.00
##000000	18.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF250

Deuteranopia (green-blind)

#FFF36E

Tritanopia (blue-blind)

#F0F2DE

Achromatopsia (no color)

#F2F2F2

Design tokens & code

CSS

--color: #e4ff63;
/* rgb */ color: rgb(228, 255, 99);
/* oklch */ color: oklch(95.2% 0.180 118.3);

Tailwind

colors: {
  custom: {
    50: '#efff96',
    500: '#e4ff63',
    950: '#000000',
  },
}

SCSS

$custom: #e4ff63;
$custom-light: #efff96;
$custom-dark: #000000;

JSON

{
  "hex": "#e4ff63",
  "rgb": {
    "r": 228,
    "g": 255,
    "b": 99
  },
  "hsl": {
    "h": 70.385,
    "s": 100,
    "l": 69.412
  },
  "oklch": {
    "l": 0.95153,
    "c": 0.18035,
    "h": 118.3
  },
  "luminance": 0.88915
}

Semantic roles & 50–950 ramp

primary

#E4FF63

secondary

#4A2CDA

accent

#00E628

background

#FFFFFC

surface

#FEFFF5

border

#D6D7CF

text

#17180E

muted

#85867F

Preview Lab

Preview with #E4FF63

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

Preview Lab → · Contrast checker → · Palette generator →