#231F01#231F01

#231F01 is a very dark, muted yellow. Relative luminance 0.013; OKLCH L 23.7% C 0.048 H 102.2°. Best body text is #FFFFFF at 16.56:1 contrast (WCAG AA passes).

Color values

HEX	#231F01
RGB	rgb(35, 31, 1)
HSL	hsl(53, 94%, 7%)
HSV	hsv(53, 97%, 14%)
CMYK	cmyk(0%, 11.4%, 97.1%, 86.3%)
CIE-LAB	lab(11.55, -2.69, 16.70)
CIE-LCH	lch(11.55, 16.91, 99.14°)
OKLab	oklab(23.66% -0.0101 0.0469)
OKLCH	oklch(23.66% 0.048 102.2)
XYZ	xyz(1.1887, 1.3395, 0.2247)
Luminance	0.0134 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231F01 #010523

analogous

#230E01 #231F01 #162301

triadic

#231F01 #01231F #1F0123

tetradic

#231F01 #01230E #010523 #230116

square

#231F01 #01230E #010523 #230116

split-complementary

#231F01 #011623 #0E0123

monochromatic

#1E1A01 #1E1A01 #231F01 #5F5403 #9A8804

Accessibility & contrast

On white

16.56

#231F01 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#231F01 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231F01

16.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231F01	#FFFFFF	#000000	##FFFFFF
##231F01	1.00	16.56	1.27	16.56
#FFFFFF	16.56	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#231E00

Deuteranopia (green-blind)

#241F02

Tritanopia (blue-blind)

#271C19

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #231f01;
/* rgb */ color: rgb(35, 31, 1);
/* oklch */ color: oklch(23.7% 0.048 102.2);

Tailwind

colors: {
  custom: {
    50: '#5e5a47',
    500: '#231f01',
    950: '#000000',
  },
}

SCSS

$custom: #231f01;
$custom-light: #5e5a47;
$custom-dark: #000000;

JSON

{
  "hex": "#231f01",
  "rgb": {
    "r": 35,
    "g": 31,
    "b": 1
  },
  "hsl": {
    "h": 52.941,
    "s": 94.444,
    "l": 7.059
  },
  "oklch": {
    "l": 0.23658,
    "c": 0.04801,
    "h": 102.2
  },
  "luminance": 0.01339
}

Semantic roles & 50–950 ramp

primary

#231F01

secondary

#16206A

accent

#42FF29

background

#F5F5F3

surface

#E9E9E5

border

#C5C5C1

text

#040300

muted

#797877

Preview Lab

Preview with #231F01

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

Preview Lab → · Contrast checker → · Palette generator →