#B1CB37#B1CB37

#B1CB37 is a light, vivid yellow-green. Relative luminance 0.523; OKLCH L 79.6% C 0.169 H 119.2°. Best body text is #000000 at 11.47:1 contrast (WCAG AA passes).

Color values

HEX	#B1CB37
RGB	rgb(177, 203, 55)
HSL	hsl(71, 59%, 51%)
HSV	hsv(71, 73%, 80%)
CMYK	cmyk(12.8%, 0%, 72.9%, 20.4%)
CIE-LAB	lab(77.48, -27.69, 66.37)
CIE-LCH	lch(77.48, 71.91, 112.64°)
OKLab	oklab(79.64% -0.0823 0.1472)
OKLCH	oklch(79.64% 0.169 119.2)
XYZ	xyz(40.1778, 52.3351, 11.5988)
Luminance	0.5233 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1CB37 #5137CB

analogous

#CB9B37 #B1CB37 #67CB37

triadic

#B1CB37 #37B1CB #CB37B1

tetradic

#B1CB37 #37CB9B #5137CB #CB3767

square

#B1CB37 #37CB9B #5137CB #CB3767

split-complementary

#B1CB37 #3767CB #9B37CB

monochromatic

#5E6C1C #889C29 #B1CB37 #C4D868 #D7E498

Accessibility & contrast

On white

1.83

#B1CB37 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.47

#B1CB37 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1CB37

11.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1CB37	#FFFFFF	#000000	##000000
##B1CB37	1.00	1.83	11.47	11.47
#FFFFFF	1.83	1.00	21.00	21.00
#000000	11.47	21.00	1.00	1.00
##000000	11.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D8BF19

Deuteranopia (green-blind)

#D5C044

Tritanopia (blue-blind)

#BBC0AF

Achromatopsia (no color)

#BFBFBF

Design tokens & code

CSS

--color: #b1cb37;
/* rgb */ color: rgb(177, 203, 55);
/* oklch */ color: oklch(79.6% 0.169 119.2);

Tailwind

colors: {
  custom: {
    50: '#ccda78',
    500: '#b1cb37',
    950: '#000000',
  },
}

SCSS

$custom: #b1cb37;
$custom-light: #ccda78;
$custom-dark: #000000;

JSON

{
  "hex": "#b1cb37",
  "rgb": {
    "r": 177,
    "g": 203,
    "b": 55
  },
  "hsl": {
    "h": 70.541,
    "s": 58.73,
    "l": 50.588
  },
  "oklch": {
    "l": 0.79641,
    "c": 0.16862,
    "h": 119.2
  },
  "luminance": 0.52335
}

Semantic roles & 50–950 ramp

primary

#B1CB37

secondary

#3D3175

accent

#46E261

background

#FEFEFB

surface

#FBFBF1

border

#D4D4CB

text

#14140A

muted

#83837D

Preview Lab

Preview with #B1CB37

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

Preview Lab → · Contrast checker → · Palette generator →