#B1CF33#B1CF33

#B1CF33 is a light, vivid yellow-green. Relative luminance 0.542; OKLCH L 80.5% C 0.175 H 120.3°. Best body text is #000000 at 11.84:1 contrast (WCAG AA passes).

Color values

HEX	#B1CF33
RGB	rgb(177, 207, 51)
HSL	hsl(72, 62%, 51%)
HSV	hsv(72, 75%, 81%)
CMYK	cmyk(14.5%, 0%, 75.4%, 18.8%)
CIE-LAB	lab(78.59, -29.77, 68.72)
CIE-LCH	lch(78.59, 74.89, 113.42°)
OKLab	oklab(80.52% -0.0884 0.1515)
OKLCH	oklch(80.52% 0.175 120.3)
XYZ	xyz(41.0426, 54.2119, 11.4331)
Luminance	0.5421 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1CF33 #5133CF

analogous

#CF9F33 #B1CF33 #63CF33

triadic

#B1CF33 #33B1CF #CF33B1

tetradic

#B1CF33 #33CF9F #5133CF #CF3363

square

#B1CF33 #33CF9F #5133CF #CF3363

split-complementary

#B1CF33 #3363CF #9F33CF

monochromatic

#5E6E1A #889F25 #B1CF33 #C4DB65 #D7E696

Accessibility & contrast

On white

1.77

#B1CF33 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.84

#B1CF33 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1CF33

11.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1CF33	#FFFFFF	#000000	##000000
##B1CF33	1.00	1.77	11.84	11.84
#FFFFFF	1.77	1.00	21.00	21.00
#000000	11.84	21.00	1.00	1.00
##000000	11.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DCC30A

Deuteranopia (green-blind)

#D9C342

Tritanopia (blue-blind)

#BBC4B2

Achromatopsia (no color)

#C2C2C2

Design tokens & code

CSS

--color: #b1cf33;
/* rgb */ color: rgb(177, 207, 51);
/* oklch */ color: oklch(80.5% 0.175 120.3);

Tailwind

colors: {
  custom: {
    50: '#ccdd77',
    500: '#b1cf33',
    950: '#000000',
  },
}

SCSS

$custom: #b1cf33;
$custom-light: #ccdd77;
$custom-dark: #000000;

JSON

{
  "hex": "#b1cf33",
  "rgb": {
    "r": 177,
    "g": 207,
    "b": 51
  },
  "hsl": {
    "h": 71.538,
    "s": 61.905,
    "l": 50.588
  },
  "oklch": {
    "l": 0.80524,
    "c": 0.17538,
    "h": 120.3
  },
  "luminance": 0.54212
}

Semantic roles & 50–950 ramp

primary

#B1CF33

secondary

#3D2F77

accent

#43E562

background

#FEFEFB

surface

#FBFCF1

border

#D4D5CB

text

#141509

muted

#83847D

Preview Lab

Preview with #B1CF33

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

Preview Lab → · Contrast checker → · Palette generator →