#181B01#181B01

#181B01 is a very dark, muted yellow. Relative luminance 0.010; OKLCH L 21.2% C 0.046 H 115.4°. Best body text is #FFFFFF at 17.56:1 contrast (WCAG AA passes).

Color values

HEX	#181B01
RGB	rgb(24, 27, 1)
HSL	hsl(67, 93%, 5%)
HSV	hsv(67, 96%, 11%)
CMYK	cmyk(11.1%, 0%, 96.3%, 89.4%)
CIE-LAB	lab(8.83, -6.33, 12.68)
CIE-LCH	lch(8.83, 14.18, 116.54°)
OKLab	oklab(21.18% -0.0198 0.0416)
OKLCH	oklch(21.18% 0.046 115.4)
XYZ	xyz(0.7741, 0.9803, 0.1771)
Luminance	0.0098 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181B01 #04011B

analogous

#1B1101 #181B01 #0B1B01

triadic

#181B01 #01181B #1B0118

tetradic

#181B01 #011B11 #04011B #1B010B

square

#181B01 #011B11 #04011B #1B010B

split-complementary

#181B01 #010B1B #11011B

monochromatic

#1A1E01 #1A1E01 #1A1E01 #4C5603 #819105

Accessibility & contrast

On white

17.56

#181B01 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#181B01 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181B01

17.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181B01	#FFFFFF	#000000	##FFFFFF
##181B01	1.00	17.56	1.20	17.56
#FFFFFF	17.56	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E1900

Deuteranopia (green-blind)

#1E1902

Tritanopia (blue-blind)

#1A1915

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #181b01;
/* rgb */ color: rgb(24, 27, 1);
/* oklch */ color: oklch(21.2% 0.046 115.4);

Tailwind

colors: {
  custom: {
    50: '#545747',
    500: '#181b01',
    950: '#000000',
  },
}

SCSS

$custom: #181b01;
$custom-light: #545747;
$custom-dark: #000000;

JSON

{
  "hex": "#181b01",
  "rgb": {
    "r": 24,
    "g": 27,
    "b": 1
  },
  "hsl": {
    "h": 66.923,
    "s": 92.857,
    "l": 5.49
  },
  "oklch": {
    "l": 0.21183,
    "c": 0.04607,
    "h": 115.4
  },
  "luminance": 0.0098
}

Semantic roles & 50–950 ramp

primary

#181B01

secondary

#1E1563

accent

#29FF42

background

#F4F5F3

surface

#E7E9E5

border

#C3C5C1

text

#020300

muted

#787877

Preview Lab

Preview with #181B01

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

Preview Lab → · Contrast checker → · Palette generator →