#B1D53A#B1D53A

#B1D53A is a light, vivid yellow-green. Relative luminance 0.572; OKLCH L 81.9% C 0.178 H 122.0°. Best body text is #000000 at 12.45:1 contrast (WCAG AA passes).

Color values

HEX	#B1D53A
RGB	rgb(177, 213, 58)
HSL	hsl(74, 65%, 53%)
HSV	hsv(74, 73%, 84%)
CMYK	cmyk(16.9%, 0%, 72.8%, 16.5%)
CIE-LAB	lab(80.31, -32.24, 68.08)
CIE-LCH	lch(80.31, 75.33, 115.34°)
OKLab	oklab(81.93% -0.0946 0.1513)
OKLCH	oklch(81.93% 0.178 122)
XYZ	xyz(42.6901, 57.2410, 12.8018)
Luminance	0.5724 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1D53A #5E3AD5

analogous

#D5AB3A #B1D53A #64D53A

triadic

#B1D53A #3AB1D5 #D53AB1

tetradic

#B1D53A #3AD5AB #5E3AD5 #D53A64

square

#B1D53A #3AD5AB #5E3AD5 #D53A64

split-complementary

#B1D53A #3A64D5 #AB3AD5

monochromatic

#647A1A #8DAD25 #B1D53A #C5E06C #D9EB9F

Accessibility & contrast

On white

1.69

#B1D53A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.45

#B1D53A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1D53A

12.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1D53A	#FFFFFF	#000000	##000000
##B1D53A	1.00	1.69	12.45	12.45
#FFFFFF	1.69	1.00	21.00	21.00
#000000	12.45	21.00	1.00	1.00
##000000	12.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E2C81B

Deuteranopia (green-blind)

#DDC748

Tritanopia (blue-blind)

#BACAB7

Achromatopsia (no color)

#C7C7C7

Design tokens & code

CSS

--color: #b1d53a;
/* rgb */ color: rgb(177, 213, 58);
/* oklch */ color: oklch(81.9% 0.178 122.0);

Tailwind

colors: {
  custom: {
    50: '#cce27b',
    500: '#b1d53a',
    950: '#000000',
  },
}

SCSS

$custom: #b1d53a;
$custom-light: #cce27b;
$custom-dark: #000000;

JSON

{
  "hex": "#b1d53a",
  "rgb": {
    "r": 177,
    "g": 213,
    "b": 58
  },
  "hsl": {
    "h": 73.935,
    "s": 64.854,
    "l": 53.137
  },
  "oklch": {
    "l": 0.81931,
    "c": 0.17841,
    "h": 122
  },
  "luminance": 0.57241
}

Semantic roles & 50–950 ramp

primary

#B1D53A

secondary

#443182

accent

#40E867

background

#FEFEFB

surface

#FBFCF2

border

#D4D5CC

text

#14150A

muted

#83847D

Preview Lab

Preview with #B1D53A

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

Preview Lab → · Contrast checker → · Palette generator →