#181C00#181C00

#181C00 is a very dark, muted yellow. Relative luminance 0.010; OKLCH L 21.5% C 0.049 H 116.9°. Best body text is #FFFFFF at 17.43:1 contrast (WCAG AA passes).

Color values

HEX	#181C00
RGB	rgb(24, 28, 0)
HSL	hsl(69, 100%, 5%)
HSV	hsv(69, 100%, 11%)
CMYK	cmyk(14.3%, 0%, 100%, 89%)
CIE-LAB	lab(9.20, -7.19, 13.62)
CIE-LCH	lch(9.20, 15.40, 117.83°)
OKLab	oklab(21.47% -0.0224 0.0441)
OKLCH	oklch(21.47% 0.049 116.9)
XYZ	xyz(0.7920, 1.0247, 0.1561)
Luminance	0.0103 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C00 #04001C

analogous

#1C1200 #181C00 #0A1C00

triadic

#181C00 #00181C #1C0018

tetradic

#181C00 #001C12 #04001C #1C000A

square

#181C00 #001C12 #04001C #1C000A

split-complementary

#181C00 #000A1C #12001C

monochromatic

#1A1F00 #1A1F00 #1A1F00 #4C5900 #819600

Accessibility & contrast

On white

17.43

#181C00 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#181C00 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C00

17.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C00	#FFFFFF	#000000	##FFFFFF
##181C00	1.00	17.43	1.21	17.43
#FFFFFF	17.43	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F1A00

Deuteranopia (green-blind)

#1F1A01

Tritanopia (blue-blind)

#1A1A16

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #181c00;
/* rgb */ color: rgb(24, 28, 0);
/* oklch */ color: oklch(21.5% 0.049 116.9);

Tailwind

colors: {
  custom: {
    50: '#545846',
    500: '#181c00',
    950: '#000000',
  },
}

SCSS

$custom: #181c00;
$custom-light: #545846;
$custom-dark: #000000;

JSON

{
  "hex": "#181c00",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 0
  },
  "hsl": {
    "h": 68.571,
    "s": 100,
    "l": 5.49
  },
  "oklch": {
    "l": 0.21474,
    "c": 0.04947,
    "h": 116.9
  },
  "luminance": 0.01025
}

Semantic roles & 50–950 ramp

primary

#181C00

secondary

#1E1266

accent

#29FF47

background

#F4F5F3

surface

#E7E9E5

border

#C3C5C1

text

#020300

muted

#787877

Preview Lab

Preview with #181C00

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

Preview Lab → · Contrast checker → · Palette generator →