#B1D337#B1D337

#B1D337 is a light, vivid yellow-green. Relative luminance 0.562; OKLCH L 81.5% C 0.178 H 121.4°. Best body text is #000000 at 12.24:1 contrast (WCAG AA passes).

Color values

HEX	#B1D337
RGB	rgb(177, 211, 55)
HSL	hsl(73, 64%, 52%)
HSV	hsv(73, 74%, 83%)
CMYK	cmyk(16.1%, 0%, 73.9%, 17.3%)
CIE-LAB	lab(79.73, -31.46, 68.52)
CIE-LCH	lch(79.73, 75.40, 114.66°)
OKLab	oklab(81.46% -0.0927 0.1517)
OKLCH	oklch(81.46% 0.178 121.4)
XYZ	xyz(42.1160, 56.2115, 12.2448)
Luminance	0.5621 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1D337 #5937D3

analogous

#D3A737 #B1D337 #63D337

triadic

#B1D337 #37B1D3 #D337B1

tetradic

#B1D337 #37D3A7 #5937D3 #D33763

square

#B1D337 #37D3A7 #5937D3 #D33763

split-complementary

#B1D337 #3763D3 #A737D3

monochromatic

#62761A #8BA825 #B1D337 #C5DE69 #D8E99B

Accessibility & contrast

On white

1.72

#B1D337 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.24

#B1D337 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1D337

12.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1D337	#FFFFFF	#000000	##000000
##B1D337	1.00	1.72	12.24	12.24
#FFFFFF	1.72	1.00	21.00	21.00
#000000	12.24	21.00	1.00	1.00
##000000	12.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E0C614

Deuteranopia (green-blind)

#DCC645

Tritanopia (blue-blind)

#BBC8B5

Achromatopsia (no color)

#C6C6C6

Design tokens & code

CSS

--color: #b1d337;
/* rgb */ color: rgb(177, 211, 55);
/* oklch */ color: oklch(81.5% 0.178 121.4);

Tailwind

colors: {
  custom: {
    50: '#cce079',
    500: '#b1d337',
    950: '#000000',
  },
}

SCSS

$custom: #b1d337;
$custom-light: #cce079;
$custom-dark: #000000;

JSON

{
  "hex": "#b1d337",
  "rgb": {
    "r": 177,
    "g": 211,
    "b": 55
  },
  "hsl": {
    "h": 73.077,
    "s": 63.934,
    "l": 52.157
  },
  "oklch": {
    "l": 0.81457,
    "c": 0.17779,
    "h": 121.4
  },
  "luminance": 0.56211
}

Semantic roles & 50–950 ramp

primary

#B1D337

secondary

#41307E

accent

#41E765

background

#FEFEFB

surface

#FBFCF2

border

#D4D5CC

text

#14150A

muted

#83847D

Preview Lab

Preview with #B1D337

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

Preview Lab → · Contrast checker → · Palette generator →