#99EC63#99EC63

#99EC63 is a very light, vivid yellow-green. Relative luminance 0.677; OKLCH L 86.2% C 0.189 H 134.8°. Best body text is #000000 at 14.53:1 contrast (WCAG AA passes).

Color values

HEX	#99EC63
RGB	rgb(153, 236, 99)
HSL	hsl(96, 78%, 66%)
HSV	hsv(96, 58%, 93%)
CMYK	cmyk(35.2%, 0%, 58.1%, 7.5%)
CIE-LAB	lab(85.84, -48.15, 57.39)
CIE-LCH	lch(85.84, 74.92, 130.00°)
OKLab	oklab(86.15% -0.1336 0.1343)
OKLCH	oklch(86.15% 0.189 134.8)
XYZ	xyz(45.3835, 67.6621, 22.4708)
Luminance	0.6766 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Light Grass Green

#9AF764

ΔE00 2.41

Spring Green (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#99EC63 #B663EC

analogous

#DEEC63 #99EC63 #63EC71

triadic

#99EC63 #6399EC #EC6399

tetradic

#99EC63 #63DEEC #B663EC #EC7163

square

#99EC63 #63DEEC #B663EC #EC7163

split-complementary

#99EC63 #7163EC #EC63DE

monochromatic

#59BE17 #75E52C #99EC63 #BDF39A #E0F9D0

Accessibility & contrast

On white

1.45

#99EC63 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.53

#99EC63 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #99EC63

14.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##99EC63	#FFFFFF	#000000	##000000
##99EC63	1.00	1.45	14.53	14.53
#FFFFFF	1.45	1.00	21.00	21.00
#000000	14.53	21.00	1.00	1.00
##000000	14.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F4DB54

Deuteranopia (green-blind)

#E8D46D

Tritanopia (blue-blind)

#98E4CE

Achromatopsia (no color)

#D7D7D7

Design tokens & code

CSS

--color: #99ec63;
/* rgb */ color: rgb(153, 236, 99);
/* oklch */ color: oklch(86.2% 0.189 134.8);

Tailwind

colors: {
  custom: {
    50: '#bbf294',
    500: '#99ec63',
    950: '#000000',
  },
}

SCSS

$custom: #99ec63;
$custom-light: #bbf294;
$custom-dark: #000000;

JSON

{
  "hex": "#99ec63",
  "rgb": {
    "r": 153,
    "g": 236,
    "b": 99
  },
  "hsl": {
    "h": 96.35,
    "s": 78.286,
    "l": 65.686
  },
  "oklch": {
    "l": 0.86154,
    "c": 0.18944,
    "h": 134.8
  },
  "luminance": 0.67664
}

Semantic roles & 50–950 ramp

primary

#99EC63

secondary

#8837BC

accent

#0BDB89

background

#FDFFFC

surface

#F9FEF4

border

#D2D6CE

text

#12170D

muted

#82857F

Preview Lab

Preview with #99EC63

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

Preview Lab → · Contrast checker → · Palette generator →