#B1FE81#B1FE81

#B1FE81 is a very light, vivid yellow-green. Relative luminance 0.818; OKLCH L 92.0% C 0.175 H 134.7°. Best body text is #000000 at 17.36:1 contrast (WCAG AA passes).

Color values

HEX	#B1FE81
RGB	rgb(177, 254, 129)
HSL	hsl(97, 98%, 75%)
HSV	hsv(97, 49%, 100%)
CMYK	cmyk(30.3%, 0%, 49.2%, 0.4%)
CIE-LAB	lab(92.49, -44.68, 52.00)
CIE-LCH	lch(92.49, 68.56, 130.67°)
OKLab	oklab(91.99% -0.1233 0.1247)
OKLCH	oklch(91.99% 0.175 134.7)
XYZ	xyz(57.5345, 81.8136, 33.5248)
Luminance	0.8182 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Spring Green (survey)

#A9F971

ΔE00 1.83

Light Yellowish Green

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1FE81 #CE81FE

analogous

#EFFE81 #B1FE81 #81FE8F

triadic

#B1FE81 #81B1FE #FE81B1

tetradic

#B1FE81 #81EFFE #CE81FE #FE8F81

square

#B1FE81 #81EFFE #CE81FE #FE8F81

split-complementary

#B1FE81 #8F81FE #FE81EF

monochromatic

#66FD08 #8BFE44 #B1FE81 #D7FEBE #ECFFE1

Accessibility & contrast

On white

1.21

#B1FE81 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.36

#B1FE81 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1FE81

17.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1FE81	#FFFFFF	#000000	##000000
##B1FE81	1.00	1.21	17.36	17.36
#FFFFFF	1.21	1.00	21.00	21.00
#000000	17.36	21.00	1.00	1.00
##000000	17.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEE76

Deuteranopia (green-blind)

#FBE789

Tritanopia (blue-blind)

#B0F6E1

Achromatopsia (no color)

#E9E9E9

Design tokens & code

CSS

--color: #b1fe81;
/* rgb */ color: rgb(177, 254, 129);
/* oklch */ color: oklch(92.0% 0.175 134.7);

Tailwind

colors: {
  custom: {
    50: '#cbffa8',
    500: '#b1fe81',
    950: '#000000',
  },
}

SCSS

$custom: #b1fe81;
$custom-light: #cbffa8;
$custom-dark: #000000;

JSON

{
  "hex": "#b1fe81",
  "rgb": {
    "r": 177,
    "g": 254,
    "b": 129
  },
  "hsl": {
    "h": 96.96,
    "s": 98.425,
    "l": 75.098
  },
  "oklch": {
    "l": 0.91992,
    "c": 0.17537,
    "h": 134.7
  },
  "luminance": 0.81816
}

Semantic roles & 50–950 ramp

primary

#B1FE81

secondary

#A346DD

accent

#00E68D

background

#FEFFFD

surface

#FBFFF7

border

#D4D7D0

text

#141810

muted

#838681

Preview Lab

Preview with #B1FE81

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

Preview Lab → · Contrast checker → · Palette generator →