#191B01#191B01

#191B01 is a very dark, muted yellow. Relative luminance 0.010; OKLCH L 21.3% C 0.046 H 113.6°. Best body text is #FFFFFF at 17.52:1 contrast (WCAG AA passes).

Color values

HEX	#191B01
RGB	rgb(25, 27, 1)
HSL	hsl(65, 93%, 5%)
HSV	hsv(65, 96%, 11%)
CMYK	cmyk(7.4%, 0%, 96.3%, 89.4%)
CIE-LAB	lab(8.93, -5.79, 12.85)
CIE-LCH	lch(8.93, 14.09, 114.27°)
OKLab	oklab(21.29% -0.0182 0.0418)
OKLCH	oklch(21.29% 0.046 113.6)
XYZ	xyz(0.7983, 0.9927, 0.1783)
Luminance	0.0099 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191B01 #03011B

analogous

#1B1001 #191B01 #0C1B01

triadic

#191B01 #01191B #1B0119

tetradic

#191B01 #011B10 #03011B #1B010C

square

#191B01 #011B10 #03011B #1B010C

split-complementary

#191B01 #010C1B #10011B

monochromatic

#1B1E01 #1B1E01 #1B1E01 #505603 #869105

Accessibility & contrast

On white

17.52

#191B01 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#191B01 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191B01

17.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191B01	#FFFFFF	#000000	##FFFFFF
##191B01	1.00	17.52	1.20	17.52
#FFFFFF	17.52	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E1900

Deuteranopia (green-blind)

#1E1A02

Tritanopia (blue-blind)

#1C1915

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #191b01;
/* rgb */ color: rgb(25, 27, 1);
/* oklch */ color: oklch(21.3% 0.046 113.6);

Tailwind

colors: {
  custom: {
    50: '#555747',
    500: '#191b01',
    950: '#000000',
  },
}

SCSS

$custom: #191b01;
$custom-light: #555747;
$custom-dark: #000000;

JSON

{
  "hex": "#191b01",
  "rgb": {
    "r": 25,
    "g": 27,
    "b": 1
  },
  "hsl": {
    "h": 64.615,
    "s": 92.857,
    "l": 5.49
  },
  "oklch": {
    "l": 0.21293,
    "c": 0.04563,
    "h": 113.6
  },
  "luminance": 0.00993
}

Semantic roles & 50–950 ramp

primary

#191B01

secondary

#1B1563

accent

#29FF39

background

#F4F5F3

surface

#E8E9E5

border

#C4C5C1

text

#030300

muted

#787877

Preview Lab

Preview with #191B01

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

Preview Lab → · Contrast checker → · Palette generator →