#99CC3B#99CC3B

#99CC3B is a light, vivid yellow-green. Relative luminance 0.503; OKLCH L 78.2% C 0.178 H 127.1°. Best body text is #000000 at 11.05:1 contrast (WCAG AA passes).

Color values

HEX	#99CC3B
RGB	rgb(153, 204, 59)
HSL	hsl(81, 59%, 52%)
HSV	hsv(81, 71%, 80%)
CMYK	cmyk(25%, 0%, 71.1%, 20%)
CIE-LAB	lab(76.24, -37.43, 63.22)
CIE-LCH	lch(76.24, 73.47, 120.62°)
OKLab	oklab(78.24% -0.1073 0.1418)
OKLCH	oklch(78.24% 0.178 127.1)
XYZ	xyz(35.5192, 50.2731, 11.9692)
Luminance	0.5027 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#99CC3B #6E3BCC

analogous

#CCB63B #99CC3B #51CC3B

triadic

#99CC3B #3B99CC #CC3B99

tetradic

#99CC3B #3BCCB6 #6E3BCC #CC3B51

square

#99CC3B #3BCCB6 #6E3BCC #CC3B51

split-complementary

#99CC3B #3B51CC #B63BCC

monochromatic

#53701D #76A02A #99CC3B #B2D96C #CCE59C

Accessibility & contrast

On white

1.90

#99CC3B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.05

#99CC3B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #99CC3B

11.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##99CC3B	#FFFFFF	#000000	##000000
##99CC3B	1.00	1.90	11.05	11.05
#FFFFFF	1.90	1.00	21.00	21.00
#000000	11.05	21.00	1.00	1.00
##000000	11.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D6BE22

Deuteranopia (green-blind)

#CFBB48

Tritanopia (blue-blind)

#9FC3B0

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #99cc3b;
/* rgb */ color: rgb(153, 204, 59);
/* oklch */ color: oklch(78.2% 0.178 127.1);

Tailwind

colors: {
  custom: {
    50: '#bbdb7a',
    500: '#99cc3b',
    950: '#000000',
  },
}

SCSS

$custom: #99cc3b;
$custom-light: #bbdb7a;
$custom-dark: #000000;

JSON

{
  "hex": "#99cc3b",
  "rgb": {
    "r": 153,
    "g": 204,
    "b": 59
  },
  "hsl": {
    "h": 81.103,
    "s": 58.704,
    "l": 51.569
  },
  "oklch": {
    "l": 0.78244,
    "c": 0.17784,
    "h": 127.1
  },
  "luminance": 0.50274
}

Semantic roles & 50–950 ramp

primary

#99CC3B

secondary

#4B3279

accent

#46E27D

background

#FDFEFB

surface

#F9FCF2

border

#D2D5CC

text

#12150A

muted

#82847D

Preview Lab

Preview with #99CC3B

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

Preview Lab → · Contrast checker → · Palette generator →