#B9EF59#B9EF59

#B9EF59 is a very light, vivid yellow-green. Relative luminance 0.728; OKLCH L 88.6% C 0.186 H 126.8°. Best body text is #000000 at 15.55:1 contrast (WCAG AA passes).

Color values

HEX	#B9EF59
RGB	rgb(185, 239, 89)
HSL	hsl(82, 82%, 64%)
HSV	hsv(82, 63%, 94%)
CMYK	cmyk(22.6%, 0%, 62.8%, 6.3%)
CIE-LAB	lab(88.34, -39.02, 64.85)
CIE-LCH	lch(88.34, 75.69, 121.03°)
OKLab	oklab(88.61% -0.1111 0.1487)
OKLCH	oklch(88.61% 0.186 126.8)
XYZ	xyz(52.6773, 72.7677, 20.7195)
Luminance	0.7277 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B9EF59 #8F59EF

analogous

#EFDA59 #B9EF59 #6EEF59

triadic

#B9EF59 #59B9EF #EF59B9

tetradic

#B9EF59 #59EFDA #8F59EF #EF596E

square

#B9EF59 #59EFDA #8F59EF #EF596E

split-complementary

#B9EF59 #596EEF #DA59EF

monochromatic

#7FBC12 #A1EA21 #B9EF59 #D1F491 #E8FAC9

Accessibility & contrast

On white

1.35

#B9EF59 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

15.55

#B9EF59 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B9EF59

15.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B9EF59	#FFFFFF	#000000	##000000
##B9EF59	1.00	1.35	15.55	15.55
#FFFFFF	1.35	1.00	21.00	21.00
#000000	15.55	21.00	1.00	1.00
##000000	15.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FBE046

Deuteranopia (green-blind)

#F3DD64

Tritanopia (blue-blind)

#C0E5D0

Achromatopsia (no color)

#DEDEDE

Design tokens & code

CSS

--color: #b9ef59;
/* rgb */ color: rgb(185, 239, 89);
/* oklch */ color: oklch(88.6% 0.186 126.8);

Tailwind

colors: {
  custom: {
    50: '#d1f48e',
    500: '#b9ef59',
    950: '#000000',
  },
}

SCSS

$custom: #b9ef59;
$custom-light: #d1f48e;
$custom-dark: #000000;

JSON

{
  "hex": "#b9ef59",
  "rgb": {
    "r": 185,
    "g": 239,
    "b": 89
  },
  "hsl": {
    "h": 81.6,
    "s": 82.418,
    "l": 64.314
  },
  "oklch": {
    "l": 0.88613,
    "c": 0.18562,
    "h": 126.8
  },
  "luminance": 0.72769
}

Semantic roles & 50–950 ramp

primary

#B9EF59

secondary

#6332BA

accent

#07DF54

background

#FEFFFC

surface

#FBFEF4

border

#D4D6CE

text

#14170D

muted

#83857F

Preview Lab

Preview with #B9EF59

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

Preview Lab → · Contrast checker → · Palette generator →