#99DF51#99DF51

#99DF51 is a very light, vivid yellow-green. Relative luminance 0.601; OKLCH L 82.9% C 0.187 H 131.7°. Best body text is #000000 at 13.03:1 contrast (WCAG AA passes).

Color values

HEX	#99DF51
RGB	rgb(153, 223, 81)
HSL	hsl(90, 69%, 60%)
HSV	hsv(90, 64%, 87%)
CMYK	cmyk(31.4%, 0%, 63.7%, 12.5%)
CIE-LAB	lab(81.91, -44.23, 60.64)
CIE-LCH	lch(81.91, 75.05, 126.10°)
OKLab	oklab(82.91% -0.1242 0.1393)
OKLCH	oklch(82.91% 0.187 131.7)
XYZ	xyz(41.0093, 60.1403, 17.2305)
Luminance	0.6014 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#99DF51 #9751DF

analogous

#DFDE51 #99DF51 #52DF51

triadic

#99DF51 #5199DF #DF5199

tetradic

#99DF51 #51DFDE #9751DF #DF5152

square

#99DF51 #51DFDE #9751DF #DF5152

split-complementary

#99DF51 #5152DF #DE51DF

monochromatic

#5C991C #7BCD26 #99DF51 #B7E985 #D6F2B8

Accessibility & contrast

On white

1.61

#99DF51 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.03

#99DF51 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #99DF51

13.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##99DF51	#FFFFFF	#000000	##000000
##99DF51	1.00	1.61	13.03	13.03
#FFFFFF	1.61	1.00	21.00	21.00
#000000	13.03	21.00	1.00	1.00
##000000	13.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E8CF3F

Deuteranopia (green-blind)

#DECA5C

Tritanopia (blue-blind)

#9BD6C2

Achromatopsia (no color)

#CCCCCC

Design tokens & code

CSS

--color: #99df51;
/* rgb */ color: rgb(153, 223, 81);
/* oklch */ color: oklch(82.9% 0.187 131.7);

Tailwind

colors: {
  custom: {
    50: '#bbe988',
    500: '#99df51',
    950: '#000000',
  },
}

SCSS

$custom: #99df51;
$custom-light: #bbe988;
$custom-dark: #000000;

JSON

{
  "hex": "#99df51",
  "rgb": {
    "r": 153,
    "g": 223,
    "b": 81
  },
  "hsl": {
    "h": 89.577,
    "s": 68.932,
    "l": 59.608
  },
  "oklch": {
    "l": 0.82909,
    "c": 0.18663,
    "h": 131.7
  },
  "luminance": 0.60142
}

Semantic roles & 50–950 ramp

primary

#99DF51

secondary

#69379D

accent

#3CEC93

background

#FDFEFC

surface

#F9FDF4

border

#D2D5CE

text

#12160C

muted

#82847F

Preview Lab

Preview with #99DF51

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

Preview Lab → · Contrast checker → · Palette generator →