#99CF3B#99CF3B

#99CF3B is a light, vivid yellow-green. Relative luminance 0.517; OKLCH L 79.0% C 0.182 H 127.7°. Best body text is #000000 at 11.34:1 contrast (WCAG AA passes).

Color values

HEX	#99CF3B
RGB	rgb(153, 207, 59)
HSL	hsl(82, 61%, 52%)
HSV	hsv(82, 71%, 81%)
CMYK	cmyk(26.1%, 0%, 71.5%, 18.8%)
CIE-LAB	lab(77.11, -38.77, 64.09)
CIE-LCH	lch(77.11, 74.90, 121.17°)
OKLab	oklab(78.95% -0.111 0.1436)
OKLCH	oklch(78.95% 0.182 127.7)
XYZ	xyz(36.2391, 51.7129, 12.2091)
Luminance	0.5171 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#99CF3B #713BCF

analogous

#CFBB3B #99CF3B #4FCF3B

triadic

#99CF3B #3B99CF #CF3B99

tetradic

#99CF3B #3BCFBB #713BCF #CF3B4F

square

#99CF3B #3BCFBB #713BCF #CF3B4F

split-complementary

#99CF3B #3B4FCF #BB3BCF

monochromatic

#54731C #77A528 #99CF3B #B3DB6C #CCE79D

Accessibility & contrast

On white

1.85

#99CF3B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.34

#99CF3B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #99CF3B

11.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##99CF3B	#FFFFFF	#000000	##000000
##99CF3B	1.00	1.85	11.34	11.34
#FFFFFF	1.85	1.00	21.00	21.00
#000000	11.34	21.00	1.00	1.00
##000000	11.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D9C120

Deuteranopia (green-blind)

#D2BD48

Tritanopia (blue-blind)

#9EC6B2

Achromatopsia (no color)

#BEBEBE

Design tokens & code

CSS

--color: #99cf3b;
/* rgb */ color: rgb(153, 207, 59);
/* oklch */ color: oklch(79.0% 0.182 127.7);

Tailwind

colors: {
  custom: {
    50: '#bbde7a',
    500: '#99cf3b',
    950: '#000000',
  },
}

SCSS

$custom: #99cf3b;
$custom-light: #bbde7a;
$custom-dark: #000000;

JSON

{
  "hex": "#99cf3b",
  "rgb": {
    "r": 153,
    "g": 207,
    "b": 59
  },
  "hsl": {
    "h": 81.892,
    "s": 60.656,
    "l": 52.157
  },
  "oklch": {
    "l": 0.78952,
    "c": 0.18152,
    "h": 127.7
  },
  "luminance": 0.51714
}

Semantic roles & 50–950 ramp

primary

#99CF3B

secondary

#4D327C

accent

#44E47E

background

#FDFEFB

surface

#F9FCF2

border

#D2D5CC

text

#12150A

muted

#82847D

Preview Lab

Preview with #99CF3B

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

Preview Lab → · Contrast checker → · Palette generator →