#E9FF59#E9FF59

#E9FF59 is a very light, vivid yellow. Relative luminance 0.896; OKLCH L 95.4% C 0.186 H 116.5°. Best body text is #000000 at 18.91:1 contrast (WCAG AA passes).

Color values

HEX	#E9FF59
RGB	rgb(233, 255, 89)
HSL	hsl(68, 100%, 67%)
HSV	hsv(68, 65%, 100%)
CMYK	cmyk(8.6%, 0%, 65.1%, 0%)
CIE-LAB	lab(95.82, -27.93, 73.70)
CIE-LCH	lch(95.82, 78.81, 110.76°)
OKLab	oklab(95.43% -0.083 0.1664)
OKLCH	oklch(95.43% 0.186 116.5)
XYZ	xyz(71.1690, 89.5658, 22.9880)
Luminance	0.8956 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#E9FF59 #6F59FF

analogous

#FFC259 #E9FF59 #96FF59

triadic

#E9FF59 #59E9FF #FF59E9

tetradic

#E9FF59 #59FFC2 #6F59FF #FF5996

square

#E9FF59 #59FFC2 #6F59FF #FF5996

split-complementary

#E9FF59 #5996FF #C259FF

monochromatic

#C0DE00 #E1FF1C #E9FF59 #F1FF96 #F9FFD3

Accessibility & contrast

On white

1.11

#E9FF59 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.91

#E9FF59 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #E9FF59

18.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##E9FF59	#FFFFFF	#000000	##000000
##E9FF59	1.00	1.11	18.91	18.91
#FFFFFF	1.11	1.00	21.00	21.00
#000000	18.91	21.00	1.00	1.00
##000000	18.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF242

Deuteranopia (green-blind)

#FFF465

Tritanopia (blue-blind)

#F7F1DD

Achromatopsia (no color)

#F3F3F3

Design tokens & code

CSS

--color: #e9ff59;
/* rgb */ color: rgb(233, 255, 89);
/* oklch */ color: oklch(95.4% 0.186 116.5);

Tailwind

colors: {
  custom: {
    50: '#f3ff90',
    500: '#e9ff59',
    950: '#000000',
  },
}

SCSS

$custom: #e9ff59;
$custom-light: #f3ff90;
$custom-dark: #000000;

JSON

{
  "hex": "#e9ff59",
  "rgb": {
    "r": 233,
    "g": 255,
    "b": 89
  },
  "hsl": {
    "h": 67.952,
    "s": 100,
    "l": 67.451
  },
  "oklch": {
    "l": 0.95433,
    "c": 0.18597,
    "h": 116.5
  },
  "luminance": 0.89565
}

Semantic roles & 50–950 ramp

primary

#E9FF59

secondary

#3D26D6

accent

#00E61E

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#17170D

muted

#85857F

Preview Lab

Preview with #E9FF59

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

Preview Lab → · Contrast checker → · Palette generator →