#818C11#818C11

#818C11 is a mid, vivid yellow. Relative luminance 0.235; OKLCH L 61.0% C 0.134 H 115.3°. Best body text is #000000 at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#818C11
RGB	rgb(129, 140, 17)
HSL	hsl(65, 78%, 31%)
HSV	hsv(65, 88%, 55%)
CMYK	cmyk(7.9%, 0%, 87.9%, 45.1%)
CIE-LAB	lab(55.55, -18.45, 56.42)
CIE-LCH	lch(55.55, 59.36, 108.11°)
OKLab	oklab(61.05% -0.0572 0.1212)
OKLCH	oklch(61.05% 0.134 115.3)
XYZ	xyz(18.5331, 23.4641, 4.0829)
Luminance	0.2346 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#818C11 #1C118C

analogous

#8C5911 #818C11 #438C11

triadic

#818C11 #11818C #8C1181

tetradic

#818C11 #118C59 #1C118C #8C1143

square

#818C11 #118C59 #1C118C #8C1143

split-complementary

#818C11 #11438C #59118C

monochromatic

#1C1F04 #4F550A #818C11 #B3C318 #D6E631

Accessibility & contrast

On white

3.69

#818C11 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.69

#818C11 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #818C11

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##818C11	#FFFFFF	#000000	##000000
##818C11	1.00	3.69	5.69	5.69
#FFFFFF	3.69	1.00	21.00	21.00
#000000	5.69	21.00	1.00	1.00
##000000	5.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#978400

Deuteranopia (green-blind)

#968620

Tritanopia (blue-blind)

#8A8377

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #818c11;
/* rgb */ color: rgb(129, 140, 17);
/* oklch */ color: oklch(61.0% 0.134 115.3);

Tailwind

colors: {
  custom: {
    50: '#a9ad5f',
    500: '#818c11',
    950: '#000000',
  },
}

SCSS

$custom: #818c11;
$custom-light: #a9ad5f;
$custom-dark: #000000;

JSON

{
  "hex": "#818c11",
  "rgb": {
    "r": 129,
    "g": 140,
    "b": 17
  },
  "hsl": {
    "h": 65.366,
    "s": 78.344,
    "l": 30.784
  },
  "oklch": {
    "l": 0.61049,
    "c": 0.13397,
    "h": 115.3
  },
  "luminance": 0.23464
}

Semantic roles & 50–950 ramp

primary

#818C11

secondary

#4438C1

accent

#33F544

background

#FAFAF5

surface

#F4F4EA

border

#CECEC6

text

#101005

muted

#7F7F79

Preview Lab

Preview with #818C11

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

Preview Lab → · Contrast checker → · Palette generator →