#B1F05A#B1F05A

#B1F05A is a very light, vivid yellow-green. Relative luminance 0.724; OKLCH L 88.4% C 0.190 H 129.1°. Best body text is #000000 at 15.48:1 contrast (WCAG AA passes).

Color values

HEX	#B1F05A
RGB	rgb(177, 240, 90)
HSL	hsl(85, 83%, 65%)
HSV	hsv(85, 63%, 94%)
CMYK	cmyk(26.3%, 0%, 62.5%, 5.9%)
CIE-LAB	lab(88.16, -42.31, 64.13)
CIE-LCH	lch(88.16, 76.83, 123.42°)
OKLab	oklab(88.35% -0.1196 0.1474)
OKLCH	oklch(88.35% 0.19 129.1)
XYZ	xyz(51.1368, 72.4043, 20.9521)
Luminance	0.7240 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Spring Green (survey)

#A9F971

ΔE00 3.77

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1F05A #995AF0

analogous

#F0E45A #B1F05A #66F05A

triadic

#B1F05A #5AB1F0 #F05AB1

tetradic

#B1F05A #5AF0E4 #995AF0 #F05A66

square

#B1F05A #5AF0E4 #995AF0 #F05A66

split-complementary

#B1F05A #5A66F0 #E45AF0

monochromatic

#76BE11 #96EB22 #B1F05A #CCF592 #E6FACA

Accessibility & contrast

On white

1.36

#B1F05A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

15.48

#B1F05A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1F05A

15.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1F05A	#FFFFFF	#000000	##000000
##B1F05A	1.00	1.36	15.48	15.48
#FFFFFF	1.36	1.00	21.00	21.00
#000000	15.48	21.00	1.00	1.00
##000000	15.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FBE048

Deuteranopia (green-blind)

#F2DC65

Tritanopia (blue-blind)

#B6E6D1

Achromatopsia (no color)

#DDDDDD

Design tokens & code

CSS

--color: #b1f05a;
/* rgb */ color: rgb(177, 240, 90);
/* oklch */ color: oklch(88.4% 0.190 129.1);

Tailwind

colors: {
  custom: {
    50: '#ccf58f',
    500: '#b1f05a',
    950: '#000000',
  },
}

SCSS

$custom: #b1f05a;
$custom-light: #ccf58f;
$custom-dark: #000000;

JSON

{
  "hex": "#b1f05a",
  "rgb": {
    "r": 177,
    "g": 240,
    "b": 90
  },
  "hsl": {
    "h": 85.2,
    "s": 83.333,
    "l": 64.706
  },
  "oklch": {
    "l": 0.88354,
    "c": 0.18984,
    "h": 129.1
  },
  "luminance": 0.72405
}

Semantic roles & 50–950 ramp

primary

#B1F05A

secondary

#6C32BD

accent

#06E061

background

#FEFFFC

surface

#FBFEF4

border

#D4D6CE

text

#14170D

muted

#83857F

Preview Lab

Preview with #B1F05A

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

Preview Lab → · Contrast checker → · Palette generator →