#99DD51#99DD51

#99DD51 is a very light, vivid yellow-green. Relative luminance 0.591; OKLCH L 82.4% C 0.184 H 131.4°. Best body text is #000000 at 12.82:1 contrast (WCAG AA passes).

Color values

HEX	#99DD51
RGB	rgb(153, 221, 81)
HSL	hsl(89, 67%, 59%)
HSV	hsv(89, 63%, 87%)
CMYK	cmyk(30.8%, 0%, 63.3%, 13.3%)
CIE-LAB	lab(81.33, -43.36, 60.01)
CIE-LCH	lch(81.33, 74.04, 125.85°)
OKLab	oklab(82.44% -0.1218 0.138)
OKLCH	oklch(82.44% 0.184 131.4)
XYZ	xyz(40.4781, 59.0779, 17.0535)
Luminance	0.5908 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#99DD51 #9551DD

analogous

#DDDB51 #99DD51 #53DD51

triadic

#99DD51 #5199DD #DD5199

tetradic

#99DD51 #51DDDB #9551DD #DD5153

square

#99DD51 #51DDDB #9551DD #DD5153

split-complementary

#99DD51 #5153DD #DB51DD

monochromatic

#5C961D #7BC927 #99DD51 #B7E784 #D5F1B7

Accessibility & contrast

On white

1.64

#99DD51 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.82

#99DD51 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #99DD51

12.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##99DD51	#FFFFFF	#000000	##000000
##99DD51	1.00	1.64	12.82	12.82
#FFFFFF	1.64	1.00	21.00	21.00
#000000	12.82	21.00	1.00	1.00
##000000	12.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E6CD40

Deuteranopia (green-blind)

#DDC85C

Tritanopia (blue-blind)

#9BD4C0

Achromatopsia (no color)

#CACACA

Design tokens & code

CSS

--color: #99dd51;
/* rgb */ color: rgb(153, 221, 81);
/* oklch */ color: oklch(82.4% 0.184 131.4);

Tailwind

colors: {
  custom: {
    50: '#bbe888',
    500: '#99dd51',
    950: '#000000',
  },
}

SCSS

$custom: #99dd51;
$custom-light: #bbe888;
$custom-dark: #000000;

JSON

{
  "hex": "#99dd51",
  "rgb": {
    "r": 153,
    "g": 221,
    "b": 81
  },
  "hsl": {
    "h": 89.143,
    "s": 67.308,
    "l": 59.216
  },
  "oklch": {
    "l": 0.82437,
    "c": 0.18407,
    "h": 131.4
  },
  "luminance": 0.59079
}

Semantic roles & 50–950 ramp

primary

#99DD51

secondary

#68389B

accent

#3EEA91

background

#FDFEFC

surface

#F9FCF4

border

#D2D5CE

text

#12160C

muted

#82847F

Preview Lab

Preview with #99DD51

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

Preview Lab → · Contrast checker → · Palette generator →