#E5FC51#E5FC51

#E5FC51 is a very light, vivid yellow. Relative luminance 0.869; OKLCH L 94.4% C 0.189 H 116.8°. Best body text is #000000 at 18.37:1 contrast (WCAG AA passes).

Color values

HEX	#E5FC51
RGB	rgb(229, 252, 81)
HSL	hsl(68, 97%, 65%)
HSV	hsv(68, 68%, 99%)
CMYK	cmyk(9.1%, 0%, 67.9%, 1.2%)
CIE-LAB	lab(94.68, -28.56, 75.40)
CIE-LCH	lch(94.68, 80.63, 110.75°)
OKLab	oklab(94.44% -0.0853 0.1689)
OKLCH	oklch(94.44% 0.189 116.8)
XYZ	xyz(68.6103, 86.8738, 20.9369)
Luminance	0.8687 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#E5FC51 #6851FC

analogous

#FCBD51 #E5FC51 #90FC51

triadic

#E5FC51 #51E5FC #FC51E5

tetradic

#E5FC51 #51FCBD #6851FC #FC5190

square

#E5FC51 #51FCBD #6851FC #FC5190

split-complementary

#E5FC51 #5190FC #BD51FC

monochromatic

#B4CF04 #DCFB15 #E5FC51 #EEFD8D #F7FEC9

Accessibility & contrast

On white

1.14

#E5FC51 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.37

#E5FC51 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #E5FC51

18.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##E5FC51	#FFFFFF	#000000	##000000
##E5FC51	1.00	1.14	18.37	18.37
#FFFFFF	1.14	1.00	21.00	21.00
#000000	18.37	21.00	1.00	1.00
##000000	18.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEF36

Deuteranopia (green-blind)

#FFF15E

Tritanopia (blue-blind)

#F3EEDA

Achromatopsia (no color)

#F0F0F0

Design tokens & code

CSS

--color: #e5fc51;
/* rgb */ color: rgb(229, 252, 81);
/* oklch */ color: oklch(94.4% 0.189 116.8);

Tailwind

colors: {
  custom: {
    50: '#f1fd8b',
    500: '#e5fc51',
    950: '#000000',
  },
}

SCSS

$custom: #e5fc51;
$custom-light: #f1fd8b;
$custom-dark: #000000;

JSON

{
  "hex": "#e5fc51",
  "rgb": {
    "r": 229,
    "g": 252,
    "b": 81
  },
  "hsl": {
    "h": 68.07,
    "s": 96.61,
    "l": 65.294
  },
  "oklch": {
    "l": 0.94438,
    "c": 0.18923,
    "h": 116.8
  },
  "luminance": 0.86873
}

Semantic roles & 50–950 ramp

primary

#E5FC51

secondary

#3D27CA

accent

#00E61F

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#17170D

muted

#85857F

Preview Lab

Preview with #E5FC51

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

Preview Lab → · Contrast checker → · Palette generator →