#99FB57#99FB57

#99FB57 is a very light, highly saturated yellow-green. Relative luminance 0.765; OKLCH L 89.6% C 0.217 H 135.1°. Best body text is #000000 at 16.29:1 contrast (WCAG AA passes).

Color values

HEX	#99FB57
RGB	rgb(153, 251, 87)
HSL	hsl(96, 95%, 66%)
HSV	hsv(96, 65%, 98%)
CMYK	cmyk(39%, 0%, 65.3%, 1.6%)
CIE-LAB	lab(90.07, -55.31, 67.01)
CIE-LCH	lch(90.07, 86.89, 129.54°)
OKLab	oklab(89.58% -0.154 0.1535)
OKLCH	oklch(89.58% 0.217 135.1)
XYZ	xyz(49.3532, 76.4523, 21.1713)
Luminance	0.7645 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Spring Green (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#99FB57 #B957FB

analogous

#EBFB57 #99FB57 #57FB67

triadic

#99FB57 #5799FB #FB5799

tetradic

#99FB57 #57EBFB #B957FB #FB6757

square

#99FB57 #57EBFB #B957FB #FB6757

split-complementary

#99FB57 #6757FB #FB57EB

monochromatic

#58D305 #75FA1B #99FB57 #BDFC93 #E2FECF

Accessibility & contrast

On white

1.29

#99FB57 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

16.29

#99FB57 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #99FB57

16.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##99FB57	#FFFFFF	#000000	##000000
##99FB57	1.00	1.29	16.29	16.29
#FFFFFF	1.29	1.00	21.00	21.00
#000000	16.29	21.00	1.00	1.00
##000000	16.29	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE841

Deuteranopia (green-blind)

#F6E065

Tritanopia (blue-blind)

#97F2D9

Achromatopsia (no color)

#E3E3E3

Design tokens & code

CSS

--color: #99fb57;
/* rgb */ color: rgb(153, 251, 87);
/* oklch */ color: oklch(89.6% 0.217 135.1);

Tailwind

colors: {
  custom: {
    50: '#bdfd8e',
    500: '#99fb57',
    950: '#000000',
  },
}

SCSS

$custom: #99fb57;
$custom-light: #bdfd8e;
$custom-dark: #000000;

JSON

{
  "hex": "#99fb57",
  "rgb": {
    "r": 153,
    "g": 251,
    "b": 87
  },
  "hsl": {
    "h": 95.854,
    "s": 95.349,
    "l": 66.275
  },
  "oklch": {
    "l": 0.89576,
    "c": 0.21742,
    "h": 135.1
  },
  "luminance": 0.76455
}

Semantic roles & 50–950 ramp

primary

#99FB57

secondary

#8B29CD

accent

#00E689

background

#FDFFFC

surface

#F9FFF4

border

#D2D7CE

text

#13180D

muted

#82867F

Preview Lab

Preview with #99FB57

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

Preview Lab → · Contrast checker → · Palette generator →