#99DA37#99DA37

#99DA37 is a light, vivid yellow-green. Relative luminance 0.572; OKLCH L 81.5% C 0.197 H 129.4°. Best body text is #000000 at 12.44:1 contrast (WCAG AA passes).

Color values

HEX	#99DA37
RGB	rgb(153, 218, 55)
HSL	hsl(84, 69%, 54%)
HSV	hsv(84, 75%, 85%)
CMYK	cmyk(29.8%, 0%, 74.8%, 14.5%)
CIE-LAB	lab(80.29, -43.81, 68.54)
CIE-LCH	lch(80.29, 81.34, 122.58°)
OKLab	oklab(81.53% -0.125 0.1523)
OKLCH	oklch(81.53% 0.197 129.4)
XYZ	xyz(38.8977, 57.1898, 12.6030)
Luminance	0.5719 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#99DA37 #7837DA

analogous

#DAC937 #99DA37 #47DA37

triadic

#99DA37 #3799DA #DA3799

tetradic

#99DA37 #37DAC9 #7837DA #DA3747

square

#99DA37 #37DAC9 #7837DA #DA3747

split-complementary

#99DA37 #3747DA #C937DA

monochromatic

#567F18 #79B321 #99DA37 #B3E46B #CEED9E

Accessibility & contrast

On white

1.69

#99DA37 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.44

#99DA37 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #99DA37

12.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##99DA37	#FFFFFF	#000000	##000000
##99DA37	1.00	1.69	12.44	12.44
#FFFFFF	1.69	1.00	21.00	21.00
#000000	12.44	21.00	1.00	1.00
##000000	12.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E4CA10

Deuteranopia (green-blind)

#DBC647

Tritanopia (blue-blind)

#9DD0BB

Achromatopsia (no color)

#C7C7C7

Design tokens & code

CSS

--color: #99da37;
/* rgb */ color: rgb(153, 218, 55);
/* oklch */ color: oklch(81.5% 0.197 129.4);

Tailwind

colors: {
  custom: {
    50: '#bce67a',
    500: '#99da37',
    950: '#000000',
  },
}

SCSS

$custom: #99da37;
$custom-light: #bce67a;
$custom-dark: #000000;

JSON

{
  "hex": "#99da37",
  "rgb": {
    "r": 153,
    "g": 218,
    "b": 55
  },
  "hsl": {
    "h": 83.926,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.81527,
    "c": 0.19708,
    "h": 129.4
  },
  "luminance": 0.57191
}

Semantic roles & 50–950 ramp

primary

#99DA37

secondary

#522F86

accent

#3CEC82

background

#FDFEFB

surface

#F9FCF2

border

#D2D5CC

text

#12160A

muted

#82847D

Preview Lab

Preview with #99DA37

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

Preview Lab → · Contrast checker → · Palette generator →