#B1F257#B1F257

#B1F257 is a very light, vivid yellow-green. Relative luminance 0.735; OKLCH L 88.8% C 0.195 H 129.2°. Best body text is #000000 at 15.71:1 contrast (WCAG AA passes).

Color values

HEX	#B1F257
RGB	rgb(177, 242, 87)
HSL	hsl(85, 86%, 65%)
HSV	hsv(85, 64%, 95%)
CMYK	cmyk(26.9%, 0%, 64%, 5.1%)
CIE-LAB	lab(88.70, -43.41, 65.91)
CIE-LCH	lch(88.70, 78.92, 123.37°)
OKLab	oklab(88.79% -0.1229 0.1508)
OKLCH	oklch(88.79% 0.195 129.2)
XYZ	xyz(51.6037, 73.5382, 20.4905)
Luminance	0.7354 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1F257 #9857F2

analogous

#F2E557 #B1F257 #64F257

triadic

#B1F257 #57B1F2 #F257B1

tetradic

#B1F257 #57F2E5 #9857F2 #F25764

square

#B1F257 #57F2E5 #9857F2 #F25764

split-complementary

#B1F257 #5764F2 #E557F2

monochromatic

#76C00F #97EE1E #B1F257 #CBF690 #E6FBC9

Accessibility & contrast

On white

1.34

#B1F257 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

15.71

#B1F257 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1F257

15.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1F257	#FFFFFF	#000000	##000000
##B1F257	1.00	1.34	15.71	15.71
#FFFFFF	1.34	1.00	21.00	21.00
#000000	15.71	21.00	1.00	1.00
##000000	15.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FDE243

Deuteranopia (green-blind)

#F4DD63

Tritanopia (blue-blind)

#B6E8D2

Achromatopsia (no color)

#DFDFDF

Design tokens & code

CSS

--color: #b1f257;
/* rgb */ color: rgb(177, 242, 87);
/* oklch */ color: oklch(88.8% 0.195 129.2);

Tailwind

colors: {
  custom: {
    50: '#ccf68d',
    500: '#b1f257',
    950: '#000000',
  },
}

SCSS

$custom: #b1f257;
$custom-light: #ccf68d;
$custom-dark: #000000;

JSON

{
  "hex": "#b1f257",
  "rgb": {
    "r": 177,
    "g": 242,
    "b": 87
  },
  "hsl": {
    "h": 85.161,
    "s": 85.635,
    "l": 64.51
  },
  "oklch": {
    "l": 0.88785,
    "c": 0.19455,
    "h": 129.2
  },
  "luminance": 0.73539
}

Semantic roles & 50–950 ramp

primary

#B1F257

secondary

#6B30BE

accent

#03E261

background

#FEFFFC

surface

#FBFEF4

border

#D4D6CE

text

#14170D

muted

#83857F

Preview Lab

Preview with #B1F257

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

Preview Lab → · Contrast checker → · Palette generator →