#99C538#99C538

#99C538 is a light, vivid yellow-green. Relative luminance 0.470; OKLCH L 76.6% C 0.171 H 125.5°. Best body text is #000000 at 10.40:1 contrast (WCAG AA passes).

Color values

HEX	#99C538
RGB	rgb(153, 197, 56)
HSL	hsl(79, 56%, 50%)
HSV	hsv(79, 72%, 77%)
CMYK	cmyk(22.3%, 0%, 71.6%, 22.7%)
CIE-LAB	lab(74.18, -34.42, 62.26)
CIE-LCH	lch(74.18, 71.14, 118.94°)
OKLab	oklab(76.57% -0.0994 0.1393)
OKLCH	oklch(76.57% 0.171 125.5)
XYZ	xyz(33.8171, 46.9899, 11.0289)
Luminance	0.4699 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#99C538 #6438C5

analogous

#C5AA38 #99C538 #53C538

triadic

#99C538 #3899C5 #C53899

tetradic

#99C538 #38C5AA #6438C5 #C53853

square

#99C538 #38C5AA #6438C5 #C53853

split-complementary

#99C538 #3853C5 #AA38C5

monochromatic

#4F661D #74952A #99C538 #B2D467 #CAE196

Accessibility & contrast

On white

2.02

#99C538 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.40

#99C538 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #99C538

10.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##99C538	#FFFFFF	#000000	##000000
##99C538	1.00	2.02	10.40	10.40
#FFFFFF	2.02	1.00	21.00	21.00
#000000	10.40	21.00	1.00	1.00
##000000	10.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D0B81F

Deuteranopia (green-blind)

#CAB644

Tritanopia (blue-blind)

#A0BCAA

Achromatopsia (no color)

#B6B6B6

Design tokens & code

CSS

--color: #99c538;
/* rgb */ color: rgb(153, 197, 56);
/* oklch */ color: oklch(76.6% 0.171 125.5);

Tailwind

colors: {
  custom: {
    50: '#bbd678',
    500: '#99c538',
    950: '#000000',
  },
}

SCSS

$custom: #99c538;
$custom-light: #bbd678;
$custom-dark: #000000;

JSON

{
  "hex": "#99c538",
  "rgb": {
    "r": 153,
    "g": 197,
    "b": 56
  },
  "hsl": {
    "h": 78.723,
    "s": 55.731,
    "l": 49.608
  },
  "oklch": {
    "l": 0.76574,
    "c": 0.17113,
    "h": 125.5
  },
  "luminance": 0.4699
}

Semantic roles & 50–950 ramp

primary

#99C538

secondary

#A08CCD

accent

#49DF78

background

#FBFDF7

surface

#F7FAEE

border

#D0D3C9

text

#121409

muted

#81837B

Preview Lab

Preview with #99C538

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

Preview Lab → · Contrast checker → · Palette generator →