#B5F251#B5F251

#B5F251 is a very light, vivid yellow-green. Relative luminance 0.739; OKLCH L 89.0% C 0.197 H 127.9°. Best body text is #000000 at 15.78:1 contrast (WCAG AA passes).

Color values

HEX#B5F251
RGBrgb(181, 242, 81)
HSLhsl(83, 86%, 63%)
HSVhsv(83, 67%, 95%)
CMYKcmyk(25.2%, 0%, 66.5%, 5.1%)
CIE-LABlab(88.89, -42.38, 68.50)
CIE-LCHlch(88.89, 80.55, 121.75°)
OKLaboklab(88.98% -0.1208 0.1554)
OKLCHoklch(88.98% 0.197 127.9)
XYZxyz(52.2934, 73.9210, 19.2961)
Luminance0.7392 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#B5F251 #8E51F2
analogous
#F2DE51 #B5F251 #64F251
triadic
#B5F251 #51B5F2 #F251B5
tetradic
#B5F251 #51F2DE #8E51F2 #F25164
square
#B5F251 #51F2DE #8E51F2 #F25164
split-complementary
#B5F251 #5164F2 #DE51F2
monochromatic
#79BB0E #9DEE18 #B5F251 #CDF68A #E5FBC3

Accessibility & contrast

On white

1.33
#B5F251 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

15.78
#B5F251 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B5F251
15.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##B5F251#FFFFFF#000000##000000
##B5F2511.001.3315.7815.78
#FFFFFF1.331.0021.0021.00
#00000015.7821.001.001.00
##00000015.7821.001.001.00

Color blindness preview

Protanopia (red-blind)
#FEE23A
Deuteranopia (green-blind)
#F5DE5E
Tritanopia (blue-blind)
#BBE7D2
Achromatopsia (no color)
#DFDFDF

Design tokens & code

CSS
--color: #b5f251;
/* rgb */ color: rgb(181, 242, 81);
/* oklch */ color: oklch(89.0% 0.197 127.9);
Tailwind
colors: {
  custom: {
    50: '#cff68a',
    500: '#b5f251',
    950: '#000000',
  },
}
SCSS
$custom: #b5f251;
$custom-light: #cff68a;
$custom-dark: #000000;
JSON
{
  "hex": "#b5f251",
  "rgb": {
    "r": 181,
    "g": 242,
    "b": 81
  },
  "hsl": {
    "h": 82.733,
    "s": 86.096,
    "l": 63.333
  },
  "oklch": {
    "l": 0.88977,
    "c": 0.19684,
    "h": 127.9
  },
  "luminance": 0.73922
}

Semantic roles & 50–950 ramp

primary
#B5F251
secondary
#632EB9
accent
#03E358
background
#FEFFFC
surface
#FBFEF4
border
#D4D6CE
text
#14170C
muted
#83857F

Preview Lab

Preview with #B5F251

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

Preview Lab → · Contrast checker → · Palette generator →

#B5F251 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva