#99CF40#99CF40

#99CF40 is a light, vivid yellow-green. Relative luminance 0.518; OKLCH L 79.0% C 0.178 H 128.0°. Best body text is #000000 at 11.35:1 contrast (WCAG AA passes).

Color values

HEX	#99CF40
RGB	rgb(153, 207, 64)
HSL	hsl(83, 60%, 53%)
HSV	hsv(83, 69%, 81%)
CMYK	cmyk(26.1%, 0%, 69.1%, 18.8%)
CIE-LAB	lab(77.14, -38.46, 62.30)
CIE-LCH	lch(77.14, 73.21, 121.69°)
OKLab	oklab(78.99% -0.1098 0.1406)
OKLCH	oklch(78.99% 0.178 128)
XYZ	xyz(36.3751, 51.7673, 12.9251)
Luminance	0.5177 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#99CF40 #7640CF

analogous

#CFBD40 #99CF40 #51CF40

triadic

#99CF40 #4099CF #CF4099

tetradic

#99CF40 #40CFBD #7640CF #CF4051

square

#99CF40 #40CFBD #7640CF #CF4051

split-complementary

#99CF40 #4051CF #BD40CF

monochromatic

#55771E #78A82A #99CF40 #B3DB71 #CDE8A2

Accessibility & contrast

On white

1.85

#99CF40 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.35

#99CF40 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #99CF40

11.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##99CF40	#FFFFFF	#000000	##000000
##99CF40	1.00	1.85	11.35	11.35
#FFFFFF	1.85	1.00	21.00	21.00
#000000	11.35	21.00	1.00	1.00
##000000	11.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D9C12A

Deuteranopia (green-blind)

#D2BD4C

Tritanopia (blue-blind)

#9EC6B3

Achromatopsia (no color)

#BEBEBE

Design tokens & code

CSS

--color: #99cf40;
/* rgb */ color: rgb(153, 207, 64);
/* oklch */ color: oklch(79.0% 0.178 128.0);

Tailwind

colors: {
  custom: {
    50: '#bbde7d',
    500: '#99cf40',
    950: '#000000',
  },
}

SCSS

$custom: #99cf40;
$custom-light: #bbde7d;
$custom-dark: #000000;

JSON

{
  "hex": "#99cf40",
  "rgb": {
    "r": 153,
    "g": 207,
    "b": 64
  },
  "hsl": {
    "h": 82.657,
    "s": 59.833,
    "l": 53.137
  },
  "oklch": {
    "l": 0.78989,
    "c": 0.17835,
    "h": 128
  },
  "luminance": 0.51768
}

Semantic roles & 50–950 ramp

primary

#99CF40

secondary

#50347F

accent

#45E381

background

#FDFEFB

surface

#F9FCF2

border

#D2D5CC

text

#12150A

muted

#82847D

Preview Lab

Preview with #99CF40

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

Preview Lab → · Contrast checker → · Palette generator →