#99EF57#99EF57

#99EF57 is a very light, highly saturated yellow-green. Relative luminance 0.692; OKLCH L 86.7% C 0.203 H 134.0°. Best body text is #000000 at 14.84:1 contrast (WCAG AA passes).

Color values

HEX	#99EF57
RGB	rgb(153, 239, 87)
HSL	hsl(94, 83%, 64%)
HSV	hsv(94, 64%, 94%)
CMYK	cmyk(36%, 0%, 63.6%, 6.3%)
CIE-LAB	lab(86.60, -50.46, 63.28)
CIE-LCH	lch(86.60, 80.94, 128.57°)
OKLab	oklab(86.74% -0.1408 0.1456)
OKLCH	oklch(86.74% 0.203 134)
XYZ	xyz(45.7228, 69.1914, 19.9611)
Luminance	0.6919 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Spring Green (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#99EF57 #AD57EF

analogous

#E5EF57 #99EF57 #57EF61

triadic

#99EF57 #5799EF #EF5799

tetradic

#99EF57 #57E5EF #AD57EF #EF6157

square

#99EF57 #57E5EF #AD57EF #EF6157

split-complementary

#99EF57 #6157EF #EF57E5

monochromatic

#5BBA12 #77EA1F #99EF57 #BBF48F #DDFAC7

Accessibility & contrast

On white

1.42

#99EF57 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.84

#99EF57 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #99EF57

14.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##99EF57	#FFFFFF	#000000	##000000
##99EF57	1.00	1.42	14.84	14.84
#FFFFFF	1.42	1.00	21.00	21.00
#000000	14.84	21.00	1.00	1.00
##000000	14.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F8DD44

Deuteranopia (green-blind)

#ECD663

Tritanopia (blue-blind)

#99E6CF

Achromatopsia (no color)

#D9D9D9

Design tokens & code

CSS

--color: #99ef57;
/* rgb */ color: rgb(153, 239, 87);
/* oklch */ color: oklch(86.7% 0.203 134.0);

Tailwind

colors: {
  custom: {
    50: '#bcf58d',
    500: '#99ef57',
    950: '#000000',
  },
}

SCSS

$custom: #99ef57;
$custom-light: #bcf58d;
$custom-dark: #000000;

JSON

{
  "hex": "#99ef57",
  "rgb": {
    "r": 153,
    "g": 239,
    "b": 87
  },
  "hsl": {
    "h": 93.947,
    "s": 82.609,
    "l": 63.922
  },
  "oklch": {
    "l": 0.86741,
    "c": 0.20253,
    "h": 134
  },
  "luminance": 0.69193
}

Semantic roles & 50–950 ramp

primary

#99EF57

secondary

#7E31B9

accent

#06DF81

background

#FDFFFC

surface

#F9FEF4

border

#D2D6CE

text

#12170D

muted

#82857F

Preview Lab

Preview with #99EF57

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

Preview Lab → · Contrast checker → · Palette generator →