#818D10#818D10

#818D10 is a mid, vivid yellow. Relative luminance 0.238; OKLCH L 61.3% C 0.135 H 115.7°. Best body text is #000000 at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#818D10
RGB	rgb(129, 141, 16)
HSL	hsl(66, 80%, 31%)
HSV	hsv(66, 89%, 55%)
CMYK	cmyk(8.5%, 0%, 88.7%, 44.7%)
CIE-LAB	lab(55.84, -19.00, 56.87)
CIE-LCH	lch(55.84, 59.96, 108.47°)
OKLab	oklab(61.28% -0.0587 0.122)
OKLCH	oklch(61.28% 0.135 115.7)
XYZ	xyz(18.6722, 23.7546, 4.0916)
Luminance	0.2375 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#818D10 #1C108D

analogous

#8D5A10 #818D10 #428D10

triadic

#818D10 #10818D #8D1081

tetradic

#818D10 #108D5A #1C108D #8D1042

square

#818D10 #108D5A #1C108D #8D1042

split-complementary

#818D10 #10428D #5A108D

monochromatic

#1C1F04 #4F560A #818D10 #B3C416 #D6E730

Accessibility & contrast

On white

3.65

#818D10 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.75

#818D10 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #818D10

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##818D10	#FFFFFF	#000000	##000000
##818D10	1.00	3.65	5.75	5.75
#FFFFFF	3.65	1.00	21.00	21.00
#000000	5.75	21.00	1.00	1.00
##000000	5.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#988500

Deuteranopia (green-blind)

#97871F

Tritanopia (blue-blind)

#8A8478

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #818d10;
/* rgb */ color: rgb(129, 141, 16);
/* oklch */ color: oklch(61.3% 0.135 115.7);

Tailwind

colors: {
  custom: {
    50: '#a9ae5f',
    500: '#818d10',
    950: '#000000',
  },
}

SCSS

$custom: #818d10;
$custom-light: #a9ae5f;
$custom-dark: #000000;

JSON

{
  "hex": "#818d10",
  "rgb": {
    "r": 129,
    "g": 141,
    "b": 16
  },
  "hsl": {
    "h": 65.76,
    "s": 79.618,
    "l": 30.784
  },
  "oklch": {
    "l": 0.61284,
    "c": 0.1354,
    "h": 115.7
  },
  "luminance": 0.23754
}

Semantic roles & 50–950 ramp

primary

#818D10

secondary

#4437C2

accent

#32F645

background

#FAFAF5

surface

#F4F4EA

border

#CECEC6

text

#101005

muted

#7F7F79

Preview Lab

Preview with #818D10

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

Preview Lab → · Contrast checker → · Palette generator →