#B1EF59#B1EF59

#B1EF59 is a very light, vivid yellow-green. Relative luminance 0.718; OKLCH L 88.1% C 0.189 H 128.8°. Best body text is #000000 at 15.36:1 contrast (WCAG AA passes).

Color values

HEX#B1EF59
RGBrgb(177, 239, 89)
HSLhsl(85, 82%, 64%)
HSVhsv(85, 63%, 94%)
CMYKcmyk(25.9%, 0%, 62.8%, 6.3%)
CIE-LABlab(87.87, -41.95, 64.22)
CIE-LCHlch(87.87, 76.71, 123.16°)
OKLaboklab(88.12% -0.1187 0.1475)
OKLCHoklch(88.12% 0.189 128.8)
XYZxyz(50.8009, 71.8002, 20.6316)
Luminance0.7180 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#B1EF59 #9759EF
analogous
#EFE259 #B1EF59 #66EF59
triadic
#B1EF59 #59B1EF #EF59B1
tetradic
#B1EF59 #59EFE2 #9759EF #EF5966
square
#B1EF59 #59EFE2 #9759EF #EF5966
split-complementary
#B1EF59 #5966EF #E259EF
monochromatic
#75BC12 #97EA21 #B1EF59 #CBF491 #E5FAC9

Accessibility & contrast

On white

1.37
#B1EF59 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

15.36
#B1EF59 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1EF59
15.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##B1EF59#FFFFFF#000000##000000
##B1EF591.001.3715.3615.36
#FFFFFF1.371.0021.0021.00
#00000015.3621.001.001.00
##00000015.3621.001.001.00

Color blindness preview

Protanopia (red-blind)
#FADF46
Deuteranopia (green-blind)
#F1DB64
Tritanopia (blue-blind)
#B6E5D0
Achromatopsia (no color)
#DCDCDC

Design tokens & code

CSS
--color: #b1ef59;
/* rgb */ color: rgb(177, 239, 89);
/* oklch */ color: oklch(88.1% 0.189 128.8);
Tailwind
colors: {
  custom: {
    50: '#ccf48e',
    500: '#b1ef59',
    950: '#000000',
  },
}
SCSS
$custom: #b1ef59;
$custom-light: #ccf48e;
$custom-dark: #000000;
JSON
{
  "hex": "#b1ef59",
  "rgb": {
    "r": 177,
    "g": 239,
    "b": 89
  },
  "hsl": {
    "h": 84.8,
    "s": 82.418,
    "l": 64.314
  },
  "oklch": {
    "l": 0.88116,
    "c": 0.18932,
    "h": 128.8
  },
  "luminance": 0.71801
}

Semantic roles & 50–950 ramp

primary
#B1EF59
secondary
#6A32BA
accent
#07DF60
background
#FEFFFC
surface
#FBFEF4
border
#D4D6CE
text
#14170D
muted
#83857F

Preview Lab

Preview with #B1EF59

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

Preview Lab → · Contrast checker → · Palette generator →

#B1EF59 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva