#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
RGB	rgb(177, 239, 89)
HSL	hsl(85, 82%, 64%)
HSV	hsv(85, 63%, 94%)
CMYK	cmyk(25.9%, 0%, 62.8%, 6.3%)
CIE-LAB	lab(87.87, -41.95, 64.22)
CIE-LCH	lch(87.87, 76.71, 123.16°)
OKLab	oklab(88.12% -0.1187 0.1475)
OKLCH	oklch(88.12% 0.189 128.8)
XYZ	xyz(50.8009, 71.8002, 20.6316)
Luminance	0.7180 (WCAG relative)
Temperature	warm
Family	yellow-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
##B1EF59	1.00	1.37	15.36	15.36
#FFFFFF	1.37	1.00	21.00	21.00
#000000	15.36	21.00	1.00	1.00
##000000	15.36	21.00	1.00	1.00

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 →