#B1D737#B1D737

#B1D737 is a very light, vivid yellow-green. Relative luminance 0.582; OKLCH L 82.4% C 0.182 H 122.4°. Best body text is #000000 at 12.64:1 contrast (WCAG AA passes).

Color values

HEX	#B1D737
RGB	rgb(177, 215, 55)
HSL	hsl(74, 67%, 53%)
HSV	hsv(74, 74%, 84%)
CMYK	cmyk(17.7%, 0%, 74.4%, 15.7%)
CIE-LAB	lab(80.86, -33.31, 69.59)
CIE-LCH	lch(80.86, 77.16, 115.58°)
OKLab	oklab(82.37% -0.0978 0.154)
OKLCH	oklch(82.37% 0.182 122.4)
XYZ	xyz(43.1221, 58.2237, 12.5802)
Luminance	0.5822 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1D737 #5D37D7

analogous

#D7AD37 #B1D737 #61D737

triadic

#B1D737 #37B1D7 #D737B1

tetradic

#B1D737 #37D7AD #5D37D7 #D73761

square

#B1D737 #37D7AD #5D37D7 #D73761

split-complementary

#B1D737 #3761D7 #AD37D7

monochromatic

#647B19 #8DAE23 #B1D737 #C5E16A #D9EB9D

Accessibility & contrast

On white

1.66

#B1D737 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.64

#B1D737 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1D737

12.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1D737	#FFFFFF	#000000	##000000
##B1D737	1.00	1.66	12.64	12.64
#FFFFFF	1.66	1.00	21.00	21.00
#000000	12.64	21.00	1.00	1.00
##000000	12.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E4CA11

Deuteranopia (green-blind)

#DFC946

Tritanopia (blue-blind)

#BACCB9

Achromatopsia (no color)

#C9C9C9

Design tokens & code

CSS

--color: #b1d737;
/* rgb */ color: rgb(177, 215, 55);
/* oklch */ color: oklch(82.4% 0.182 122.4);

Tailwind

colors: {
  custom: {
    50: '#cce37a',
    500: '#b1d737',
    950: '#000000',
  },
}

SCSS

$custom: #b1d737;
$custom-light: #cce37a;
$custom-dark: #000000;

JSON

{
  "hex": "#b1d737",
  "rgb": {
    "r": 177,
    "g": 215,
    "b": 55
  },
  "hsl": {
    "h": 74.25,
    "s": 66.667,
    "l": 52.941
  },
  "oklch": {
    "l": 0.82368,
    "c": 0.1824,
    "h": 122.4
  },
  "luminance": 0.58224
}

Semantic roles & 50–950 ramp

primary

#B1D737

secondary

#433083

accent

#3EEA67

background

#FEFEFB

surface

#FBFCF2

border

#D4D5CC

text

#14150A

muted

#83847D

Preview Lab

Preview with #B1D737

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

Preview Lab → · Contrast checker → · Palette generator →