#B1FF5B#B1FF5B

#B1FF5B is a very light, highly saturated yellow-green. Relative luminance 0.816; OKLCH L 91.8% C 0.208 H 131.2°. Best body text is #000000 at 17.32:1 contrast (WCAG AA passes).

Color values

HEX	#B1FF5B
RGB	rgb(177, 255, 91)
HSL	hsl(89, 100%, 68%)
HSV	hsv(89, 64%, 100%)
CMYK	cmyk(30.6%, 0%, 64.3%, 0%)
CIE-LAB	lab(92.41, -48.66, 68.30)
CIE-LCH	lch(92.41, 83.86, 125.47°)
OKLab	oklab(91.8% -0.1369 0.1563)
OKLCH	oklch(91.8% 0.208 131.2)
XYZ	xyz(55.7792, 81.6206, 22.7110)
Luminance	0.8162 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1FF5B #A95BFF

analogous

#FFFB5B #B1FF5B #5FFF5B

triadic

#B1FF5B #5BB1FF #FF5BB1

tetradic

#B1FF5B #5BFFFB #A95BFF #FF5B5F

square

#B1FF5B #5BFFFB #A95BFF #FF5B5F

split-complementary

#B1FF5B #5B5FFF #FB5BFF

monochromatic

#75E000 #94FF1E #B1FF5B #CEFF98 #EBFFD5

Accessibility & contrast

On white

1.21

#B1FF5B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.32

#B1FF5B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1FF5B

17.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1FF5B	#FFFFFF	#000000	##000000
##B1FF5B	1.00	1.21	17.32	17.32
#FFFFFF	1.21	1.00	21.00	21.00
#000000	17.32	21.00	1.00	1.00
##000000	17.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFED45

Deuteranopia (green-blind)

#FFE768

Tritanopia (blue-blind)

#B4F5DD

Achromatopsia (no color)

#E9E9E9

Design tokens & code

CSS

--color: #b1ff5b;
/* rgb */ color: rgb(177, 255, 91);
/* oklch */ color: oklch(91.8% 0.208 131.2);

Tailwind

colors: {
  custom: {
    50: '#cdff90',
    500: '#b1ff5b',
    950: '#000000',
  },
}

SCSS

$custom: #b1ff5b;
$custom-light: #cdff90;
$custom-dark: #000000;

JSON

{
  "hex": "#b1ff5b",
  "rgb": {
    "r": 177,
    "g": 255,
    "b": 91
  },
  "hsl": {
    "h": 88.537,
    "s": 100,
    "l": 67.843
  },
  "oklch": {
    "l": 0.91804,
    "c": 0.20784,
    "h": 131.2
  },
  "luminance": 0.81622
}

Semantic roles & 50–950 ramp

primary

#B1FF5B

secondary

#7B26D8

accent

#00E66D

background

#FEFFFC

surface

#FBFFF4

border

#D4D7CE

text

#14180D

muted

#83867F

Preview Lab

Preview with #B1FF5B

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

Preview Lab → · Contrast checker → · Palette generator →