#99EF59#99EF59

#99EF59 is a very light, highly saturated yellow-green. Relative luminance 0.692; OKLCH L 86.8% C 0.201 H 134.2°. Best body text is #000000 at 14.85:1 contrast (WCAG AA passes).

Color values

HEX	#99EF59
RGB	rgb(153, 239, 89)
HSL	hsl(94, 82%, 64%)
HSV	hsv(94, 63%, 94%)
CMYK	cmyk(36%, 0%, 62.8%, 6.3%)
CIE-LAB	lab(86.62, -50.30, 62.49)
CIE-LCH	lch(86.62, 80.21, 128.83°)
OKLab	oklab(86.76% -0.1402 0.1442)
OKLCH	oklch(86.76% 0.201 134.2)
XYZ	xyz(45.8057, 69.2245, 20.3974)
Luminance	0.6923 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Spring Green (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#99EF59 #AF59EF

analogous

#E4EF59 #99EF59 #59EF64

triadic

#99EF59 #5999EF #EF5999

tetradic

#99EF59 #59E4EF #AF59EF #EF6459

square

#99EF59 #59E4EF #AF59EF #EF6459

split-complementary

#99EF59 #6459EF #EF59E4

monochromatic

#5ABC12 #77EA21 #99EF59 #BBF491 #DEFAC9

Accessibility & contrast

On white

1.41

#99EF59 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.85

#99EF59 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #99EF59

14.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##99EF59	#FFFFFF	#000000	##000000
##99EF59	1.00	1.41	14.85	14.85
#FFFFFF	1.41	1.00	21.00	21.00
#000000	14.85	21.00	1.00	1.00
##000000	14.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F8DD47

Deuteranopia (green-blind)

#ECD665

Tritanopia (blue-blind)

#98E6D0

Achromatopsia (no color)

#D9D9D9

Design tokens & code

CSS

--color: #99ef59;
/* rgb */ color: rgb(153, 239, 89);
/* oklch */ color: oklch(86.8% 0.201 134.2);

Tailwind

colors: {
  custom: {
    50: '#bcf58e',
    500: '#99ef59',
    950: '#000000',
  },
}

SCSS

$custom: #99ef59;
$custom-light: #bcf58e;
$custom-dark: #000000;

JSON

{
  "hex": "#99ef59",
  "rgb": {
    "r": 153,
    "g": 239,
    "b": 89
  },
  "hsl": {
    "h": 94.4,
    "s": 82.418,
    "l": 64.314
  },
  "oklch": {
    "l": 0.8676,
    "c": 0.20107,
    "h": 134.2
  },
  "luminance": 0.69227
}

Semantic roles & 50–950 ramp

primary

#99EF59

secondary

#8032BA

accent

#07DF83

background

#FDFFFC

surface

#F9FEF4

border

#D2D6CE

text

#12170D

muted

#82857F

Preview Lab

Preview with #99EF59

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

Preview Lab → · Contrast checker → · Palette generator →