#B9EC59#B9EC59

#B9EC59 is a very light, vivid yellow-green. Relative luminance 0.710; OKLCH L 87.9% C 0.182 H 126.2°. Best body text is #000000 at 15.21:1 contrast (WCAG AA passes).

Color values

HEX	#B9EC59
RGB	rgb(185, 236, 89)
HSL	hsl(81, 79%, 64%)
HSV	hsv(81, 62%, 93%)
CMYK	cmyk(21.6%, 0%, 62.3%, 7.5%)
CIE-LAB	lab(87.50, -37.68, 63.95)
CIE-LCH	lch(87.50, 74.22, 120.51°)
OKLab	oklab(87.93% -0.1074 0.1468)
OKLCH	oklch(87.93% 0.182 126.2)
XYZ	xyz(51.8063, 71.0257, 20.4292)
Luminance	0.7103 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B9EC59 #8C59EC

analogous

#ECD559 #B9EC59 #6FEC59

triadic

#B9EC59 #59B9EC #EC59B9

tetradic

#B9EC59 #59ECD5 #8C59EC #EC596F

square

#B9EC59 #59ECD5 #8C59EC #EC596F

split-complementary

#B9EC59 #596FEC #D559EC

monochromatic

#7EB615 #A2E622 #B9EC59 #D0F290 #E7F9C7

Accessibility & contrast

On white

1.38

#B9EC59 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

15.21

#B9EC59 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #B9EC59

15.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B9EC59	#FFFFFF	#000000	##000000
##B9EC59	1.00	1.38	15.21	15.21
#FFFFFF	1.38	1.00	21.00	21.00
#000000	15.21	21.00	1.00	1.00
##000000	15.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F8DD47

Deuteranopia (green-blind)

#F1DA64

Tritanopia (blue-blind)

#C0E2CD

Achromatopsia (no color)

#DBDBDB

Design tokens & code

CSS

--color: #b9ec59;
/* rgb */ color: rgb(185, 236, 89);
/* oklch */ color: oklch(87.9% 0.182 126.2);

Tailwind

colors: {
  custom: {
    50: '#d1f28e',
    500: '#b9ec59',
    950: '#000000',
  },
}

SCSS

$custom: #b9ec59;
$custom-light: #d1f28e;
$custom-dark: #000000;

JSON

{
  "hex": "#b9ec59",
  "rgb": {
    "r": 185,
    "g": 236,
    "b": 89
  },
  "hsl": {
    "h": 80.816,
    "s": 79.459,
    "l": 63.725
  },
  "oklch": {
    "l": 0.87934,
    "c": 0.18188,
    "h": 126.2
  },
  "luminance": 0.71026
}

Semantic roles & 50–950 ramp

primary

#B9EC59

secondary

#6134B5

accent

#0ADC53

background

#FEFFFC

surface

#FBFEF4

border

#D4D6CE

text

#14170D

muted

#83857F

Preview Lab

Preview with #B9EC59

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

Preview Lab → · Contrast checker → · Palette generator →