#EFFE81#EFFE81

#EFFE81 is a very light, vivid yellow. Relative luminance 0.908; OKLCH L 96.1% C 0.150 H 114.9°. Best body text is #000000 at 19.16:1 contrast (WCAG AA passes).

Color values

HEX	#EFFE81
RGB	rgb(239, 254, 129)
HSL	hsl(67, 98%, 75%)
HSV	hsv(67, 49%, 100%)
CMYK	cmyk(5.9%, 0%, 49.2%, 0.4%)
CIE-LAB	lab(96.34, -22.16, 57.54)
CIE-LCH	lch(96.34, 61.66, 111.07°)
OKLab	oklab(96.07% -0.0633 0.1363)
OKLCH	oklch(96.07% 0.15 114.9)
XYZ	xyz(75.0020, 90.8203, 34.3436)
Luminance	0.9082 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFE81 #9081FE

analogous

#FECE81 #EFFE81 #B0FE81

triadic

#EFFE81 #81EFFE #FE81EF

tetradic

#EFFE81 #81FECE #9081FE #FE81B0

square

#EFFE81 #81FECE #9081FE #FE81B0

split-complementary

#EFFE81 #81B0FE #CE81FE

monochromatic

#E0FD08 #E7FE44 #EFFE81 #F7FEBE #FBFFE1

Accessibility & contrast

On white

1.10

#EFFE81 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.16

#EFFE81 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFE81

19.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFE81	#FFFFFF	#000000	##000000
##EFFE81	1.00	1.10	19.16	19.16
#FFFFFF	1.10	1.00	21.00	21.00
#000000	19.16	21.00	1.00	1.00
##000000	19.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF376

Deuteranopia (green-blind)

#FFF688

Tritanopia (blue-blind)

#FBF2E1

Achromatopsia (no color)

#F4F4F4

Design tokens & code

CSS

--color: #effe81;
/* rgb */ color: rgb(239, 254, 129);
/* oklch */ color: oklch(96.1% 0.150 114.9);

Tailwind

colors: {
  custom: {
    50: '#f6fea8',
    500: '#effe81',
    950: '#000000',
  },
}

SCSS

$custom: #effe81;
$custom-light: #f6fea8;
$custom-dark: #000000;

JSON

{
  "hex": "#effe81",
  "rgb": {
    "r": 239,
    "g": 254,
    "b": 129
  },
  "hsl": {
    "h": 67.2,
    "s": 98.425,
    "l": 75.098
  },
  "oklch": {
    "l": 0.96071,
    "c": 0.15028,
    "h": 114.9
  },
  "luminance": 0.90819
}

Semantic roles & 50–950 ramp

primary

#EFFE81

secondary

#5846DD

accent

#00E61C

background

#FFFFFD

surface

#FFFFF7

border

#D7D7D0

text

#171710

muted

#858581

Preview Lab

Preview with #EFFE81

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

Preview Lab → · Contrast checker → · Palette generator →