#99D540#99D540

#99D540 is a light, vivid yellow-green. Relative luminance 0.547; OKLCH L 80.4% C 0.186 H 129.0°. Best body text is #000000 at 11.95:1 contrast (WCAG AA passes).

Color values

HEX	#99D540
RGB	rgb(153, 213, 64)
HSL	hsl(84, 64%, 54%)
HSV	hsv(84, 70%, 84%)
CMYK	cmyk(28.2%, 0%, 70%, 16.5%)
CIE-LAB	lab(78.89, -41.11, 64.07)
CIE-LCH	lch(78.89, 76.12, 122.69°)
OKLab	oklab(80.41% -0.117 0.1443)
OKLCH	oklch(80.41% 0.186 129)
XYZ	xyz(37.8564, 54.7300, 13.4189)
Luminance	0.5473 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#99D540 #7C40D5

analogous

#D5C640 #99D540 #4FD540

triadic

#99D540 #4099D5 #D54099

tetradic

#99D540 #40D5C6 #7C40D5 #D5404F

square

#99D540 #40D5C6 #7C40D5 #D5404F

split-complementary

#99D540 #404FD5 #C640D5

monochromatic

#577F1C #79B127 #99D540 #B4E072 #CFEBA4

Accessibility & contrast

On white

1.76

#99D540 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.95

#99D540 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #99D540

11.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##99D540	#FFFFFF	#000000	##000000
##99D540	1.00	1.76	11.95	11.95
#FFFFFF	1.76	1.00	21.00	21.00
#000000	11.95	21.00	1.00	1.00
##000000	11.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DFC627

Deuteranopia (green-blind)

#D7C24D

Tritanopia (blue-blind)

#9ECCB8

Achromatopsia (no color)

#C3C3C3

Design tokens & code

CSS

--color: #99d540;
/* rgb */ color: rgb(153, 213, 64);
/* oklch */ color: oklch(80.4% 0.186 129.0);

Tailwind

colors: {
  custom: {
    50: '#bbe27d',
    500: '#99d540',
    950: '#000000',
  },
}

SCSS

$custom: #99d540;
$custom-light: #bbe27d;
$custom-dark: #000000;

JSON

{
  "hex": "#99d540",
  "rgb": {
    "r": 153,
    "g": 213,
    "b": 64
  },
  "hsl": {
    "h": 84.161,
    "s": 63.948,
    "l": 54.314
  },
  "oklch": {
    "l": 0.80405,
    "c": 0.18578,
    "h": 129
  },
  "luminance": 0.54731
}

Semantic roles & 50–950 ramp

primary

#99D540

secondary

#553386

accent

#41E784

background

#FDFEFB

surface

#F9FCF2

border

#D2D5CC

text

#12150A

muted

#82847D

Preview Lab

Preview with #99D540

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

Preview Lab → · Contrast checker → · Palette generator →