#B1D43A#B1D43A

#B1D43A is a light, vivid yellow-green. Relative luminance 0.567; OKLCH L 81.7% C 0.177 H 121.8°. Best body text is #000000 at 12.35:1 contrast (WCAG AA passes).

Color values

HEX	#B1D43A
RGB	rgb(177, 212, 58)
HSL	hsl(74, 64%, 53%)
HSV	hsv(74, 73%, 83%)
CMYK	cmyk(16.5%, 0%, 72.6%, 16.9%)
CIE-LAB	lab(80.03, -31.77, 67.81)
CIE-LCH	lch(80.03, 74.88, 115.11°)
OKLab	oklab(81.7% -0.0933 0.1507)
OKLCH	oklch(81.7% 0.177 121.8)
XYZ	xyz(42.4393, 56.7395, 12.7182)
Luminance	0.5674 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1D43A #5D3AD4

analogous

#D4AA3A #B1D43A #64D43A

triadic

#B1D43A #3AB1D4 #D43AB1

tetradic

#B1D43A #3AD4AA #5D3AD4 #D43A64

square

#B1D43A #3AD4AA #5D3AD4 #D43A64

split-complementary

#B1D43A #3A64D4 #AA3AD4

monochromatic

#64791A #8DAB25 #B1D43A #C5DF6C #D9EA9E

Accessibility & contrast

On white

1.70

#B1D43A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.35

#B1D43A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1D43A

12.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1D43A	#FFFFFF	#000000	##000000
##B1D43A	1.00	1.70	12.35	12.35
#FFFFFF	1.70	1.00	21.00	21.00
#000000	12.35	21.00	1.00	1.00
##000000	12.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E1C71B

Deuteranopia (green-blind)

#DCC648

Tritanopia (blue-blind)

#BAC9B6

Achromatopsia (no color)

#C6C6C6

Design tokens & code

CSS

--color: #b1d43a;
/* rgb */ color: rgb(177, 212, 58);
/* oklch */ color: oklch(81.7% 0.177 121.8);

Tailwind

colors: {
  custom: {
    50: '#cce17b',
    500: '#b1d43a',
    950: '#000000',
  },
}

SCSS

$custom: #b1d43a;
$custom-light: #cce17b;
$custom-dark: #000000;

JSON

{
  "hex": "#b1d43a",
  "rgb": {
    "r": 177,
    "g": 212,
    "b": 58
  },
  "hsl": {
    "h": 73.636,
    "s": 64.167,
    "l": 52.941
  },
  "oklch": {
    "l": 0.81703,
    "c": 0.17725,
    "h": 121.8
  },
  "luminance": 0.5674
}

Semantic roles & 50–950 ramp

primary

#B1D43A

secondary

#433181

accent

#41E766

background

#FEFEFB

surface

#FBFCF2

border

#D4D5CC

text

#14150A

muted

#83847D

Preview Lab

Preview with #B1D43A

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

Preview Lab → · Contrast checker → · Palette generator →