#B3EF51#B3EF51

#B3EF51 is a very light, vivid yellow-green. Relative luminance 0.719; OKLCH L 88.2% C 0.194 H 127.8°. Best body text is #000000 at 15.38:1 contrast (WCAG AA passes).

Color values

HEX	#B3EF51
RGB	rgb(179, 239, 81)
HSL	hsl(83, 83%, 63%)
HSV	hsv(83, 66%, 94%)
CMYK	cmyk(25.1%, 0%, 66.1%, 6.3%)
CIE-LAB	lab(87.93, -41.81, 67.46)
CIE-LCH	lch(87.93, 79.36, 121.79°)
OKLab	oklab(88.17% -0.1191 0.1533)
OKLCH	oklch(88.17% 0.194 127.8)
XYZ	xyz(50.9421, 71.9097, 18.9790)
Luminance	0.7191 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3EF51 #8D51EF

analogous

#EFDC51 #B3EF51 #64EF51

triadic

#B3EF51 #51B3EF #EF51B3

tetradic

#B3EF51 #51EFDC #8D51EF #EF5164

square

#B3EF51 #51EFDC #8D51EF #EF5164

split-complementary

#B3EF51 #5164EF #DC51EF

monochromatic

#77B511 #9BEA19 #B3EF51 #CBF489 #E4F9C1

Accessibility & contrast

On white

1.37

#B3EF51 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

15.38

#B3EF51 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B3EF51

15.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3EF51	#FFFFFF	#000000	##000000
##B3EF51	1.00	1.37	15.38	15.38
#FFFFFF	1.37	1.00	21.00	21.00
#000000	15.38	21.00	1.00	1.00
##000000	15.38	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FBDF3B

Deuteranopia (green-blind)

#F2DB5E

Tritanopia (blue-blind)

#B9E5CF

Achromatopsia (no color)

#DCDCDC

Design tokens & code

CSS

--color: #b3ef51;
/* rgb */ color: rgb(179, 239, 81);
/* oklch */ color: oklch(88.2% 0.194 127.8);

Tailwind

colors: {
  custom: {
    50: '#cef489',
    500: '#b3ef51',
    950: '#000000',
  },
}

SCSS

$custom: #b3ef51;
$custom-light: #cef489;
$custom-dark: #000000;

JSON

{
  "hex": "#b3ef51",
  "rgb": {
    "r": 179,
    "g": 239,
    "b": 81
  },
  "hsl": {
    "h": 82.785,
    "s": 83.158,
    "l": 62.745
  },
  "oklch": {
    "l": 0.88169,
    "c": 0.19411,
    "h": 127.8
  },
  "luminance": 0.71911
}

Semantic roles & 50–950 ramp

primary

#B3EF51

secondary

#6230B5

accent

#06E059

background

#FEFFFC

surface

#FBFEF4

border

#D4D6CE

text

#14170C

muted

#83857F

Preview Lab

Preview with #B3EF51

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

Preview Lab → · Contrast checker → · Palette generator →