#B1CF39#B1CF39

#B1CF39 is a light, vivid yellow-green. Relative luminance 0.543; OKLCH L 80.6% C 0.172 H 120.4°. Best body text is #000000 at 11.85:1 contrast (WCAG AA passes).

Color values

HEX	#B1CF39
RGB	rgb(177, 207, 57)
HSL	hsl(72, 61%, 52%)
HSV	hsv(72, 72%, 81%)
CMYK	cmyk(14.5%, 0%, 72.5%, 18.8%)
CIE-LAB	lab(78.62, -29.48, 66.78)
CIE-LCH	lch(78.62, 73.00, 113.82°)
OKLab	oklab(80.56% -0.0871 0.1484)
OKLCH	oklch(80.56% 0.172 120.4)
XYZ	xyz(41.1835, 54.2683, 12.1753)
Luminance	0.5427 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1CF39 #5739CF

analogous

#CFA239 #B1CF39 #66CF39

triadic

#B1CF39 #39B1CF #CF39B1

tetradic

#B1CF39 #39CFA2 #5739CF #CF3966

square

#B1CF39 #39CFA2 #5739CF #CF3966

split-complementary

#B1CF39 #3966CF #A239CF

monochromatic

#61721C #8AA328 #B1CF39 #C4DB6A #D8E79C

Accessibility & contrast

On white

1.77

#B1CF39 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.85

#B1CF39 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1CF39

11.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1CF39	#FFFFFF	#000000	##000000
##B1CF39	1.00	1.77	11.85	11.85
#FFFFFF	1.77	1.00	21.00	21.00
#000000	11.85	21.00	1.00	1.00
##000000	11.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DCC31C

Deuteranopia (green-blind)

#D8C346

Tritanopia (blue-blind)

#BBC4B2

Achromatopsia (no color)

#C3C3C3

Design tokens & code

CSS

--color: #b1cf39;
/* rgb */ color: rgb(177, 207, 57);
/* oklch */ color: oklch(80.6% 0.172 120.4);

Tailwind

colors: {
  custom: {
    50: '#ccdd7a',
    500: '#b1cf39',
    950: '#000000',
  },
}

SCSS

$custom: #b1cf39;
$custom-light: #ccdd7a;
$custom-dark: #000000;

JSON

{
  "hex": "#b1cf39",
  "rgb": {
    "r": 177,
    "g": 207,
    "b": 57
  },
  "hsl": {
    "h": 72,
    "s": 60.976,
    "l": 51.765
  },
  "oklch": {
    "l": 0.8056,
    "c": 0.17204,
    "h": 120.4
  },
  "luminance": 0.54268
}

Semantic roles & 50–950 ramp

primary

#B1CF39

secondary

#40317B

accent

#44E464

background

#FEFEFB

surface

#FBFCF2

border

#D4D5CC

text

#14150A

muted

#83847D

Preview Lab

Preview with #B1CF39

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

Preview Lab → · Contrast checker → · Palette generator →