#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
RGBrgb(177, 212, 58)
HSLhsl(74, 64%, 53%)
HSVhsv(74, 73%, 83%)
CMYKcmyk(16.5%, 0%, 72.6%, 16.9%)
CIE-LABlab(80.03, -31.77, 67.81)
CIE-LCHlch(80.03, 74.88, 115.11°)
OKLaboklab(81.7% -0.0933 0.1507)
OKLCHoklch(81.7% 0.177 121.8)
XYZxyz(42.4393, 56.7395, 12.7182)
Luminance0.5674 (WCAG relative)
Temperaturewarm
Familyyellow-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
##B1D43A1.001.7012.3512.35
#FFFFFF1.701.0021.0021.00
#00000012.3521.001.001.00
##00000012.3521.001.001.00

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 →

#B1D43A Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva