#99F55B#99F55B

#99F55B is a very light, highly saturated yellow-green. Relative luminance 0.728; OKLCH L 88.2% C 0.207 H 134.9°. Best body text is #000000 at 15.57:1 contrast (WCAG AA passes).

Color values

HEX	#99F55B
RGB	rgb(153, 245, 91)
HSL	hsl(96, 89%, 66%)
HSV	hsv(96, 63%, 96%)
CMYK	cmyk(37.6%, 0%, 62.9%, 3.9%)
CIE-LAB	lab(88.37, -52.58, 63.59)
CIE-LCH	lch(88.37, 82.51, 129.59°)
OKLab	oklab(88.2% -0.1463 0.1467)
OKLCH	oklch(88.2% 0.207 134.9)
XYZ	xyz(47.6766, 72.8301, 21.4410)
Luminance	0.7283 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Light Grass Green

#9AF764

ΔE00 0.95

Spring Green (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#99F55B #B75BF5

analogous

#E6F55B #99F55B #5BF56A

triadic

#99F55B #5B99F5 #F55B99

tetradic

#99F55B #5BE6F5 #B75BF5 #F56A5B

square

#99F55B #5BE6F5 #B75BF5 #F56A5B

split-complementary

#99F55B #6A5BF5 #F55BE6

monochromatic

#58C90C #75F121 #99F55B #BDF995 #E1FCCE

Accessibility & contrast

On white

1.35

#99F55B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

15.57

#99F55B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #99F55B

15.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##99F55B	#FFFFFF	#000000	##000000
##99F55B	1.00	1.35	15.57	15.57
#FFFFFF	1.35	1.00	21.00	21.00
#000000	15.57	21.00	1.00	1.00
##000000	15.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FEE348

Deuteranopia (green-blind)

#F1DB67

Tritanopia (blue-blind)

#97ECD5

Achromatopsia (no color)

#DEDEDE

Design tokens & code

CSS

--color: #99f55b;
/* rgb */ color: rgb(153, 245, 91);
/* oklch */ color: oklch(88.2% 0.207 134.9);

Tailwind

colors: {
  custom: {
    50: '#bcf98f',
    500: '#99f55b',
    950: '#000000',
  },
}

SCSS

$custom: #99f55b;
$custom-light: #bcf98f;
$custom-dark: #000000;

JSON

{
  "hex": "#99f55b",
  "rgb": {
    "r": 153,
    "g": 245,
    "b": 91
  },
  "hsl": {
    "h": 95.844,
    "s": 88.506,
    "l": 65.882
  },
  "oklch": {
    "l": 0.88195,
    "c": 0.20716,
    "h": 134.9
  },
  "luminance": 0.72832
}

Semantic roles & 50–950 ramp

primary

#99F55B

secondary

#892EC6

accent

#00E589

background

#FDFFFC

surface

#F9FFF4

border

#D2D7CE

text

#12170D

muted

#82857F

Preview Lab

Preview with #99F55B

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

Preview Lab → · Contrast checker → · Palette generator →