#99CB38#99CB38

#99CB38 is a light, vivid yellow-green. Relative luminance 0.498; OKLCH L 78.0% C 0.178 H 126.8°. Best body text is #000000 at 10.95:1 contrast (WCAG AA passes).

Color values

HEX	#99CB38
RGB	rgb(153, 203, 56)
HSL	hsl(80, 59%, 51%)
HSV	hsv(80, 72%, 80%)
CMYK	cmyk(24.6%, 0%, 72.4%, 20.4%)
CIE-LAB	lab(75.93, -37.15, 63.98)
CIE-LCH	lch(75.93, 73.98, 120.14°)
OKLab	oklab(77.99% -0.1068 0.1429)
OKLCH	oklch(77.99% 0.178 126.8)
XYZ	xyz(35.2067, 49.7691, 11.4921)
Luminance	0.4977 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#99CB38 #6A38CB

analogous

#CBB338 #99CB38 #4FCB38

triadic

#99CB38 #3899CB #CB3899

tetradic

#99CB38 #38CBB3 #6A38CB #CB384F

square

#99CB38 #38CBB3 #6A38CB #CB384F

split-complementary

#99CB38 #384FCB #B338CB

monochromatic

#516C1C #759D29 #99CB38 #B2D869 #CBE499

Accessibility & contrast

On white

1.92

#99CB38 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.95

#99CB38 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #99CB38

10.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##99CB38	#FFFFFF	#000000	##000000
##99CB38	1.00	1.92	10.95	10.95
#FFFFFF	1.92	1.00	21.00	21.00
#000000	10.95	21.00	1.00	1.00
##000000	10.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D6BD1C

Deuteranopia (green-blind)

#CFBA45

Tritanopia (blue-blind)

#9FC2AF

Achromatopsia (no color)

#BBBBBB

Design tokens & code

CSS

--color: #99cb38;
/* rgb */ color: rgb(153, 203, 56);
/* oklch */ color: oklch(78.0% 0.178 126.8);

Tailwind

colors: {
  custom: {
    50: '#bbdb78',
    500: '#99cb38',
    950: '#000000',
  },
}

SCSS

$custom: #99cb38;
$custom-light: #bbdb78;
$custom-dark: #000000;

JSON

{
  "hex": "#99cb38",
  "rgb": {
    "r": 153,
    "g": 203,
    "b": 56
  },
  "hsl": {
    "h": 80.408,
    "s": 58.566,
    "l": 50.784
  },
  "oklch": {
    "l": 0.77988,
    "c": 0.17844,
    "h": 126.8
  },
  "luminance": 0.4977
}

Semantic roles & 50–950 ramp

primary

#99CB38

secondary

#A58FD0

accent

#46E27B

background

#FBFDF7

surface

#F7FBEE

border

#D0D4C9

text

#12150A

muted

#81837C

Preview Lab

Preview with #99CB38

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

Preview Lab → · Contrast checker → · Palette generator →