#B1D428#B1D428

#B1D428 is a light, vivid yellow-green. Relative luminance 0.566; OKLCH L 81.6% C 0.186 H 121.3°. Best body text is #000000 at 12.32:1 contrast (WCAG AA passes).

Color values

HEX	#B1D428
RGB	rgb(177, 212, 40)
HSL	hsl(72, 68%, 49%)
HSV	hsv(72, 81%, 83%)
CMYK	cmyk(16.5%, 0%, 81.1%, 16.9%)
CIE-LAB	lab(79.95, -32.55, 73.09)
CIE-LCH	lch(79.95, 80.01, 114.00°)
OKLab	oklab(81.61% -0.0968 0.159)
OKLCH	oklch(81.61% 0.186 121.3)
XYZ	xyz(42.0587, 56.5873, 10.7138)
Luminance	0.5659 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1D428 #4B28D4

analogous

#D4A128 #B1D428 #5BD428

triadic

#B1D428 #28B1D4 #D428B1

tetradic

#B1D428 #28D4A1 #4B28D4 #D4285B

square

#B1D428 #28D4A1 #4B28D4 #D4285B

split-complementary

#B1D428 #285BD4 #A128D4

monochromatic

#5B6D15 #86A11E #B1D428 #C4E059 #D7E98D

Accessibility & contrast

On white

1.70

#B1D428 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.32

#B1D428 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1D428

12.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1D428	#FFFFFF	#000000	##000000
##B1D428	1.00	1.70	12.32	12.32
#FFFFFF	1.70	1.00	21.00	21.00
#000000	12.32	21.00	1.00	1.00
##000000	12.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E1C700

Deuteranopia (green-blind)

#DDC63B

Tritanopia (blue-blind)

#BBC9B5

Achromatopsia (no color)

#C6C6C6

Design tokens & code

CSS

--color: #b1d428;
/* rgb */ color: rgb(177, 212, 40);
/* oklch */ color: oklch(81.6% 0.186 121.3);

Tailwind

colors: {
  custom: {
    50: '#cde173',
    500: '#b1d428',
    950: '#000000',
  },
}

SCSS

$custom: #b1d428;
$custom-light: #cde173;
$custom-dark: #000000;

JSON

{
  "hex": "#b1d428",
  "rgb": {
    "r": 177,
    "g": 212,
    "b": 40
  },
  "hsl": {
    "h": 72.209,
    "s": 68.254,
    "l": 49.412
  },
  "oklch": {
    "l": 0.81607,
    "c": 0.18609,
    "h": 121.3
  },
  "luminance": 0.56587
}

Semantic roles & 50–950 ramp

primary

#B1D428

secondary

#392A76

accent

#3DEB60

background

#FEFEFB

surface

#FBFCF1

border

#D4D5CB

text

#141509

muted

#83847D

Preview Lab

Preview with #B1D428

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

Preview Lab → · Contrast checker → · Palette generator →