#A9D128#A9D128

#A9D128 is a light, vivid yellow-green. Relative luminance 0.542; OKLCH L 80.4% C 0.186 H 123.0°. Best body text is #000000 at 11.84:1 contrast (WCAG AA passes).

Color values

HEX	#A9D128
RGB	rgb(169, 209, 40)
HSL	hsl(74, 68%, 49%)
HSV	hsv(74, 81%, 82%)
CMYK	cmyk(19.1%, 0%, 80.9%, 18%)
CIE-LAB	lab(78.57, -34.36, 71.68)
CIE-LCH	lch(78.57, 79.49, 115.61°)
OKLab	oklab(80.36% -0.1013 0.1562)
OKLCH	oklch(80.36% 0.186 123)
XYZ	xyz(39.5462, 54.1889, 10.3832)
Luminance	0.5419 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A9D128 #5028D1

analogous

#D1A528 #A9D128 #55D128

triadic

#A9D128 #28A9D1 #D128A9

tetradic

#A9D128 #28D1A5 #5028D1 #D12855

square

#A9D128 #28D1A5 #5028D1 #D12855

split-complementary

#A9D128 #2855D1 #A528D1

monochromatic

#566A14 #7F9E1E #A9D128 #BFDF57 #D2E98B

Accessibility & contrast

On white

1.77

#A9D128 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.84

#A9D128 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #A9D128

11.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A9D128	#FFFFFF	#000000	##000000
##A9D128	1.00	1.77	11.84	11.84
#FFFFFF	1.77	1.00	21.00	21.00
#000000	11.84	21.00	1.00	1.00
##000000	11.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DEC400

Deuteranopia (green-blind)

#D8C23B

Tritanopia (blue-blind)

#B2C6B3

Achromatopsia (no color)

#C2C2C2

Design tokens & code

CSS

--color: #a9d128;
/* rgb */ color: rgb(169, 209, 40);
/* oklch */ color: oklch(80.4% 0.186 123.0);

Tailwind

colors: {
  custom: {
    50: '#c7df72',
    500: '#a9d128',
    950: '#000000',
  },
}

SCSS

$custom: #a9d128;
$custom-light: #c7df72;
$custom-dark: #000000;

JSON

{
  "hex": "#a9d128",
  "rgb": {
    "r": 169,
    "g": 209,
    "b": 40
  },
  "hsl": {
    "h": 74.201,
    "s": 67.871,
    "l": 48.824
  },
  "oklch": {
    "l": 0.80362,
    "c": 0.18618,
    "h": 123
  },
  "luminance": 0.54189
}

Semantic roles & 50–950 ramp

primary

#A9D128

secondary

#3B2974

accent

#3DEB66

background

#FEFEFB

surface

#FBFCF1

border

#D4D5CB

text

#141509

muted

#83847D

Preview Lab

Preview with #A9D128

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

Preview Lab → · Contrast checker → · Palette generator →