#B1D33B#B1D33B

#B1D33B is a light, vivid yellow-green. Relative luminance 0.563; OKLCH L 81.5% C 0.175 H 121.5°. Best body text is #000000 at 12.25:1 contrast (WCAG AA passes).

Color values

HEX	#B1D33B
RGB	rgb(177, 211, 59)
HSL	hsl(73, 63%, 53%)
HSV	hsv(73, 72%, 83%)
CMYK	cmyk(16.1%, 0%, 72%, 17.3%)
CIE-LAB	lab(79.76, -31.26, 67.20)
CIE-LCH	lch(79.76, 74.11, 114.94°)
OKLab	oklab(81.48% -0.0918 0.1496)
OKLCH	oklch(81.48% 0.175 121.5)
XYZ	xyz(42.2158, 56.2514, 12.7704)
Luminance	0.5625 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1D33B #5D3BD3

analogous

#D3A93B #B1D33B #65D33B

triadic

#B1D33B #3BB1D3 #D33BB1

tetradic

#B1D33B #3BD3A9 #5D3BD3 #D33B65

square

#B1D33B #3BD3A9 #5D3BD3 #D33B65

split-complementary

#B1D33B #3B65D3 #A93BD3

monochromatic

#64791B #8DAB26 #B1D33B #C5DE6D #D9E99F

Accessibility & contrast

On white

1.71

#B1D33B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.25

#B1D33B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1D33B

12.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1D33B	#FFFFFF	#000000	##000000
##B1D33B	1.00	1.71	12.25	12.25
#FFFFFF	1.71	1.00	21.00	21.00
#000000	12.25	21.00	1.00	1.00
##000000	12.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E0C61E

Deuteranopia (green-blind)

#DCC648

Tritanopia (blue-blind)

#BBC8B6

Achromatopsia (no color)

#C6C6C6

Design tokens & code

CSS

--color: #b1d33b;
/* rgb */ color: rgb(177, 211, 59);
/* oklch */ color: oklch(81.5% 0.175 121.5);

Tailwind

colors: {
  custom: {
    50: '#cce07b',
    500: '#b1d33b',
    950: '#000000',
  },
}

SCSS

$custom: #b1d33b;
$custom-light: #cce07b;
$custom-dark: #000000;

JSON

{
  "hex": "#b1d33b",
  "rgb": {
    "r": 177,
    "g": 211,
    "b": 59
  },
  "hsl": {
    "h": 73.421,
    "s": 63.333,
    "l": 52.941
  },
  "oklch": {
    "l": 0.81482,
    "c": 0.17549,
    "h": 121.5
  },
  "luminance": 0.56251
}

Semantic roles & 50–950 ramp

primary

#B1D33B

secondary

#433281

accent

#41E666

background

#FEFEFB

surface

#FBFCF2

border

#D4D5CC

text

#14150A

muted

#83847D

Preview Lab

Preview with #B1D33B

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

Preview Lab → · Contrast checker → · Palette generator →