#EFFE5A#EFFE5A

#EFFE5A is a very light, vivid yellow. Relative luminance 0.900; OKLCH L 95.7% C 0.182 H 114.3°. Best body text is #000000 at 18.99:1 contrast (WCAG AA passes).

Color values

HEX	#EFFE5A
RGB	rgb(239, 254, 90)
HSL	hsl(65, 99%, 67%)
HSV	hsv(65, 65%, 100%)
CMYK	cmyk(5.9%, 0%, 64.6%, 0.4%)
CIE-LAB	lab(95.99, -25.04, 73.63)
CIE-LCH	lch(95.99, 77.77, 108.78°)
OKLab	oklab(95.68% -0.0752 0.1663)
OKLCH	oklch(95.68% 0.182 114.3)
XYZ	xyz(72.8857, 89.9738, 23.1980)
Luminance	0.8997 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFE5A #695AFE

analogous

#FEBB5A #EFFE5A #9DFE5A

triadic

#EFFE5A #5AEFFE #FE5AEF

tetradic

#EFFE5A #5AFEBB #695AFE #FE5A9D

square

#EFFE5A #5AFEBB #695AFE #FE5A9D

split-complementary

#EFFE5A #5A9DFE #BB5AFE

monochromatic

#C8DC01 #E9FE1D #EFFE5A #F5FE97 #FBFFD4

Accessibility & contrast

On white

1.11

#EFFE5A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.99

#EFFE5A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFE5A

18.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFE5A	#FFFFFF	#000000	##000000
##EFFE5A	1.00	1.11	18.99	18.99
#FFFFFF	1.11	1.00	21.00	21.00
#000000	18.99	21.00	1.00	1.00
##000000	18.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF243

Deuteranopia (green-blind)

#FFF565

Tritanopia (blue-blind)

#FEF0DD

Achromatopsia (no color)

#F3F3F3

Design tokens & code

CSS

--color: #effe5a;
/* rgb */ color: rgb(239, 254, 90);
/* oklch */ color: oklch(95.7% 0.182 114.3);

Tailwind

colors: {
  custom: {
    50: '#f8fe90',
    500: '#effe5a',
    950: '#000000',
  },
}

SCSS

$custom: #effe5a;
$custom-light: #f8fe90;
$custom-dark: #000000;

JSON

{
  "hex": "#effe5a",
  "rgb": {
    "r": 239,
    "g": 254,
    "b": 90
  },
  "hsl": {
    "h": 65.488,
    "s": 98.795,
    "l": 67.451
  },
  "oklch": {
    "l": 0.95678,
    "c": 0.18248,
    "h": 114.3
  },
  "luminance": 0.89973
}

Semantic roles & 50–950 ramp

primary

#EFFE5A

secondary

#3727D5

accent

#00E615

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #EFFE5A

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

Preview Lab → · Contrast checker → · Palette generator →