#231B01#231B01

#231B01 is a very dark, muted yellow. Relative luminance 0.011; OKLCH L 22.5% C 0.044 H 92.9°. Best body text is #FFFFFF at 17.09:1 contrast (WCAG AA passes).

Color values

HEX	#231B01
RGB	rgb(35, 27, 1)
HSL	hsl(46, 94%, 7%)
HSV	hsv(46, 97%, 14%)
CMYK	cmyk(0%, 22.9%, 97.1%, 86.3%)
CIE-LAB	lab(10.13, 0.13, 14.73)
CIE-LCH	lch(10.13, 14.73, 89.50°)
OKLab	oklab(22.54% -0.0022 0.0444)
OKLCH	oklch(22.54% 0.044 92.9)
XYZ	xyz(1.0906, 1.1435, 0.1920)
Luminance	0.0114 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231B01 #010923

analogous

#230A01 #231B01 #1A2301

triadic

#231B01 #01231B #1B0123

tetradic

#231B01 #01230A #010923 #23011A

square

#231B01 #01230A #010923 #23011A

split-complementary

#231B01 #011A23 #0A0123

monochromatic

#1E1701 #1E1701 #231B01 #5F4903 #9A7704

Accessibility & contrast

On white

17.09

#231B01 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#231B01 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231B01

17.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231B01	#FFFFFF	#000000	##FFFFFF
##231B01	1.00	17.09	1.23	17.09
#FFFFFF	17.09	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F1A00

Deuteranopia (green-blind)

#211D02

Tritanopia (blue-blind)

#271815

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #231b01;
/* rgb */ color: rgb(35, 27, 1);
/* oklch */ color: oklch(22.5% 0.044 92.9);

Tailwind

colors: {
  custom: {
    50: '#5e5747',
    500: '#231b01',
    950: '#000000',
  },
}

SCSS

$custom: #231b01;
$custom-light: #5e5747;
$custom-dark: #000000;

JSON

{
  "hex": "#231b01",
  "rgb": {
    "r": 35,
    "g": 27,
    "b": 1
  },
  "hsl": {
    "h": 45.882,
    "s": 94.444,
    "l": 7.059
  },
  "oklch": {
    "l": 0.22536,
    "c": 0.04444,
    "h": 92.9
  },
  "luminance": 0.01143
}

Semantic roles & 50–950 ramp

primary

#231B01

secondary

#162A6A

accent

#5BFF29

background

#F5F5F3

surface

#E9E9E5

border

#C5C5C1

text

#040300

muted

#797877

Preview Lab

Preview with #231B01

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

Preview Lab → · Contrast checker → · Palette generator →