#99EC5B#99EC5B

#99EC5B is a very light, vivid yellow-green. Relative luminance 0.675; OKLCH L 86.1% C 0.196 H 134.1°. Best body text is #000000 at 14.50:1 contrast (WCAG AA passes).

Color values

HEX	#99EC5B
RGB	rgb(153, 236, 91)
HSL	hsl(94, 79%, 64%)
HSV	hsv(94, 61%, 93%)
CMYK	cmyk(35.2%, 0%, 61.4%, 7.5%)
CIE-LAB	lab(85.76, -48.88, 60.72)
CIE-LCH	lch(85.76, 77.95, 128.83°)
OKLab	oklab(86.07% -0.1362 0.1406)
OKLCH	oklch(86.07% 0.196 134.1)
XYZ	xyz(45.0198, 67.5166, 20.5554)
Luminance	0.6752 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Spring Green (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#99EC5B #AE5BEC

analogous

#E1EC5B #99EC5B #5BEC66

triadic

#99EC5B #5B99EC #EC5B99

tetradic

#99EC5B #5BE1EC #AE5BEC #EC665B

square

#99EC5B #5BE1EC #AE5BEC #EC665B

split-complementary

#99EC5B #665BEC #EC5BE1

monochromatic

#5BB715 #77E624 #99EC5B #BBF292 #DDF9C9

Accessibility & contrast

On white

1.45

#99EC5B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.50

#99EC5B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #99EC5B

14.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##99EC5B	#FFFFFF	#000000	##000000
##99EC5B	1.00	1.45	14.50	14.50
#FFFFFF	1.45	1.00	21.00	21.00
#000000	14.50	21.00	1.00	1.00
##000000	14.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F5DB4A

Deuteranopia (green-blind)

#E9D466

Tritanopia (blue-blind)

#99E3CD

Achromatopsia (no color)

#D6D6D6

Design tokens & code

CSS

--color: #99ec5b;
/* rgb */ color: rgb(153, 236, 91);
/* oklch */ color: oklch(86.1% 0.196 134.1);

Tailwind

colors: {
  custom: {
    50: '#bcf28f',
    500: '#99ec5b',
    950: '#000000',
  },
}

SCSS

$custom: #99ec5b;
$custom-light: #bcf28f;
$custom-dark: #000000;

JSON

{
  "hex": "#99ec5b",
  "rgb": {
    "r": 153,
    "g": 236,
    "b": 91
  },
  "hsl": {
    "h": 94.345,
    "s": 79.235,
    "l": 64.118
  },
  "oklch": {
    "l": 0.86071,
    "c": 0.19575,
    "h": 134.1
  },
  "luminance": 0.67519
}

Semantic roles & 50–950 ramp

primary

#99EC5B

secondary

#7F34B7

accent

#0ADC82

background

#FDFFFC

surface

#F9FEF4

border

#D2D6CE

text

#12170D

muted

#82857F

Preview Lab

Preview with #99EC5B

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

Preview Lab → · Contrast checker → · Palette generator →