#E4FC51#E4FC51

#E4FC51 is a very light, vivid yellow. Relative luminance 0.867; OKLCH L 94.4% C 0.190 H 117.1°. Best body text is #000000 at 18.34:1 contrast (WCAG AA passes).

Color values

HEX	#E4FC51
RGB	rgb(228, 252, 81)
HSL	hsl(68, 97%, 65%)
HSV	hsv(68, 68%, 99%)
CMYK	cmyk(9.5%, 0%, 67.9%, 1.2%)
CIE-LAB	lab(94.61, -28.96, 75.31)
CIE-LCH	lch(94.61, 80.68, 111.03°)
OKLab	oklab(94.36% -0.0864 0.1687)
OKLCH	oklch(94.36% 0.19 117.1)
XYZ	xyz(68.2920, 86.7097, 20.9220)
Luminance	0.8671 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#E4FC51 #6951FC

analogous

#FCBE51 #E4FC51 #8EFC51

triadic

#E4FC51 #51E4FC #FC51E4

tetradic

#E4FC51 #51FCBE #6951FC #FC518E

square

#E4FC51 #51FCBE #6951FC #FC518E

split-complementary

#E4FC51 #518EFC #BE51FC

monochromatic

#B2CF04 #DBFB15 #E4FC51 #EDFD8D #F7FEC9

Accessibility & contrast

On white

1.14

#E4FC51 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.34

#E4FC51 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #E4FC51

18.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##E4FC51	#FFFFFF	#000000	##000000
##E4FC51	1.00	1.14	18.34	18.34
#FFFFFF	1.14	1.00	21.00	21.00
#000000	18.34	21.00	1.00	1.00
##000000	18.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEF36

Deuteranopia (green-blind)

#FFF15E

Tritanopia (blue-blind)

#F2EEDA

Achromatopsia (no color)

#EFEFEF

Design tokens & code

CSS

--color: #e4fc51;
/* rgb */ color: rgb(228, 252, 81);
/* oklch */ color: oklch(94.4% 0.190 117.1);

Tailwind

colors: {
  custom: {
    50: '#f0fd8b',
    500: '#e4fc51',
    950: '#000000',
  },
}

SCSS

$custom: #e4fc51;
$custom-light: #f0fd8b;
$custom-dark: #000000;

JSON

{
  "hex": "#e4fc51",
  "rgb": {
    "r": 228,
    "g": 252,
    "b": 81
  },
  "hsl": {
    "h": 68.421,
    "s": 96.61,
    "l": 65.294
  },
  "oklch": {
    "l": 0.94364,
    "c": 0.18955,
    "h": 117.1
  },
  "luminance": 0.86709
}

Semantic roles & 50–950 ramp

primary

#E4FC51

secondary

#3E27CA

accent

#00E620

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#17170D

muted

#85857F

Preview Lab

Preview with #E4FC51

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

Preview Lab → · Contrast checker → · Palette generator →