#B1D637#B1D637

#B1D637 is a very light, vivid yellow-green. Relative luminance 0.577; OKLCH L 82.1% C 0.181 H 122.2°. Best body text is #000000 at 12.54:1 contrast (WCAG AA passes).

Color values

HEX	#B1D637
RGB	rgb(177, 214, 55)
HSL	hsl(74, 66%, 53%)
HSV	hsv(74, 74%, 84%)
CMYK	cmyk(17.3%, 0%, 74.3%, 16.1%)
CIE-LAB	lab(80.58, -32.85, 69.33)
CIE-LCH	lch(80.58, 76.72, 115.35°)
OKLab	oklab(82.14% -0.0965 0.1534)
OKLCH	oklch(82.14% 0.181 122.2)
XYZ	xyz(42.8683, 57.7160, 12.4956)
Luminance	0.5772 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1D637 #5C37D6

analogous

#D6AB37 #B1D637 #62D637

triadic

#B1D637 #37B1D6 #D637B1

tetradic

#B1D637 #37D6AB #5C37D6 #D63762

square

#B1D637 #37D6AB #5C37D6 #D63762

split-complementary

#B1D637 #3762D6 #AB37D6

monochromatic

#637A19 #8DAC23 #B1D637 #C5E06A #D9EB9D

Accessibility & contrast

On white

1.67

#B1D637 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.54

#B1D637 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1D637

12.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1D637	#FFFFFF	#000000	##000000
##B1D637	1.00	1.67	12.54	12.54
#FFFFFF	1.67	1.00	21.00	21.00
#000000	12.54	21.00	1.00	1.00
##000000	12.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E3C912

Deuteranopia (green-blind)

#DEC846

Tritanopia (blue-blind)

#BACBB8

Achromatopsia (no color)

#C8C8C8

Design tokens & code

CSS

--color: #b1d637;
/* rgb */ color: rgb(177, 214, 55);
/* oklch */ color: oklch(82.1% 0.181 122.2);

Tailwind

colors: {
  custom: {
    50: '#cce279',
    500: '#b1d637',
    950: '#000000',
  },
}

SCSS

$custom: #b1d637;
$custom-light: #cce279;
$custom-dark: #000000;

JSON

{
  "hex": "#b1d637",
  "rgb": {
    "r": 177,
    "g": 214,
    "b": 55
  },
  "hsl": {
    "h": 73.962,
    "s": 65.975,
    "l": 52.745
  },
  "oklch": {
    "l": 0.8214,
    "c": 0.18124,
    "h": 122.2
  },
  "luminance": 0.57716
}

Semantic roles & 50–950 ramp

primary

#B1D637

secondary

#433082

accent

#3FE966

background

#FEFEFB

surface

#FBFCF2

border

#D4D5CC

text

#14150A

muted

#83847D

Preview Lab

Preview with #B1D637

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

Preview Lab → · Contrast checker → · Palette generator →