#B1CA37#B1CA37

#B1CA37 is a light, vivid yellow-green. Relative luminance 0.519; OKLCH L 79.4% C 0.167 H 118.9°. Best body text is #000000 at 11.37:1 contrast (WCAG AA passes).

Color values

HEX	#B1CA37
RGB	rgb(177, 202, 55)
HSL	hsl(70, 58%, 50%)
HSV	hsv(70, 73%, 79%)
CMYK	cmyk(12.4%, 0%, 72.8%, 20.8%)
CIE-LAB	lab(77.20, -27.21, 66.09)
CIE-LCH	lch(77.20, 71.48, 112.37°)
OKLab	oklab(79.41% -0.081 0.1466)
OKLCH	oklch(79.41% 0.167 118.9)
XYZ	xyz(39.9424, 51.8643, 11.5203)
Luminance	0.5186 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1CA37 #5037CA

analogous

#CA9937 #B1CA37 #67CA37

triadic

#B1CA37 #37B1CA #CA37B1

tetradic

#B1CA37 #37CA99 #5037CA #CA3767

square

#B1CA37 #37CA99 #5037CA #CA3767

split-complementary

#B1CA37 #3767CA #9937CA

monochromatic

#5D6A1C #879B29 #B1CA37 #C4D767 #D7E498

Accessibility & contrast

On white

1.85

#B1CA37 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.37

#B1CA37 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1CA37

11.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1CA37	#FFFFFF	#000000	##000000
##B1CA37	1.00	1.85	11.37	11.37
#FFFFFF	1.85	1.00	21.00	21.00
#000000	11.37	21.00	1.00	1.00
##000000	11.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D7BF1A

Deuteranopia (green-blind)

#D4BF44

Tritanopia (blue-blind)

#BBBFAE

Achromatopsia (no color)

#BFBFBF

Design tokens & code

CSS

--color: #b1ca37;
/* rgb */ color: rgb(177, 202, 55);
/* oklch */ color: oklch(79.4% 0.167 118.9);

Tailwind

colors: {
  custom: {
    50: '#ccda78',
    500: '#b1ca37',
    950: '#000000',
  },
}

SCSS

$custom: #b1ca37;
$custom-light: #ccda78;
$custom-dark: #000000;

JSON

{
  "hex": "#b1ca37",
  "rgb": {
    "r": 177,
    "g": 202,
    "b": 55
  },
  "hsl": {
    "h": 70.204,
    "s": 58.103,
    "l": 50.392
  },
  "oklch": {
    "l": 0.79414,
    "c": 0.16749,
    "h": 118.9
  },
  "luminance": 0.51864
}

Semantic roles & 50–950 ramp

primary

#B1CA37

secondary

#3C3174

accent

#46E161

background

#FEFEFB

surface

#FBFBF1

border

#D4D4CB

text

#14140A

muted

#83837D

Preview Lab

Preview with #B1CA37

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

Preview Lab → · Contrast checker → · Palette generator →