#B1E551#B1E551

#B1E551 is a very light, vivid yellow-green. Relative luminance 0.660; OKLCH L 85.8% C 0.183 H 126.6°. Best body text is #000000 at 14.20:1 contrast (WCAG AA passes).

Color values

HEX	#B1E551
RGB	rgb(177, 229, 81)
HSL	hsl(81, 74%, 61%)
HSV	hsv(81, 65%, 90%)
CMYK	cmyk(22.7%, 0%, 64.6%, 10.2%)
CIE-LAB	lab(84.99, -38.12, 64.33)
CIE-LCH	lch(84.99, 74.78, 120.65°)
OKLab	oklab(85.76% -0.1088 0.1467)
OKLCH	oklch(85.76% 0.183 126.6)
XYZ	xyz(47.6361, 65.9791, 18.0085)
Luminance	0.6598 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1E551 #8551E5

analogous

#E5CF51 #B1E551 #67E551

triadic

#B1E551 #51B1E5 #E551B1

tetradic

#B1E551 #51E5CF #8551E5 #E55167

square

#B1E551 #51E5CF #8551E5 #E55167

split-complementary

#B1E551 #5167E5 #CF51E5

monochromatic

#72A318 #98D820 #B1E551 #C9ED86 #E1F5BB

Accessibility & contrast

On white

1.48

#B1E551 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.20

#B1E551 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B1E551

14.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1E551	#FFFFFF	#000000	##000000
##B1E551	1.00	1.48	14.20	14.20
#FFFFFF	1.48	1.00	21.00	21.00
#000000	14.20	21.00	1.00	1.00
##000000	14.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F0D63D

Deuteranopia (green-blind)

#E9D35C

Tritanopia (blue-blind)

#B8DBC7

Achromatopsia (no color)

#D4D4D4

Design tokens & code

CSS

--color: #b1e551;
/* rgb */ color: rgb(177, 229, 81);
/* oklch */ color: oklch(85.8% 0.183 126.6);

Tailwind

colors: {
  custom: {
    50: '#cced89',
    500: '#b1e551',
    950: '#000000',
  },
}

SCSS

$custom: #b1e551;
$custom-light: #cced89;
$custom-dark: #000000;

JSON

{
  "hex": "#b1e551",
  "rgb": {
    "r": 177,
    "g": 229,
    "b": 81
  },
  "hsl": {
    "h": 81.081,
    "s": 74,
    "l": 60.784
  },
  "oklch": {
    "l": 0.85757,
    "c": 0.18268,
    "h": 126.6
  },
  "luminance": 0.6598
}

Semantic roles & 50–950 ramp

primary

#B1E551

secondary

#5C35A6

accent

#0FD655

background

#FEFFFC

surface

#FBFEF4

border

#D4D6CE

text

#14160C

muted

#83857F

Preview Lab

Preview with #B1E551

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

Preview Lab → · Contrast checker → · Palette generator →