#231B02#231B02

#231B02 is a very dark, muted yellow. Relative luminance 0.011; OKLCH L 22.6% C 0.043 H 92.1°. Best body text is #FFFFFF at 17.08:1 contrast (WCAG AA passes).

Color values

HEX	#231B02
RGB	rgb(35, 27, 2)
HSL	hsl(45, 89%, 7%)
HSV	hsv(45, 94%, 14%)
CMYK	cmyk(0%, 22.9%, 94.3%, 86.3%)
CIE-LAB	lab(10.15, 0.25, 14.34)
CIE-LCH	lch(10.15, 14.34, 89.00°)
OKLab	oklab(22.56% -0.0016 0.0428)
OKLCH	oklch(22.56% 0.043 92.1)
XYZ	xyz(1.0961, 1.1456, 0.2208)
Luminance	0.0115 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231B02 #020A23

analogous

#230B02 #231B02 #1B2302

triadic

#231B02 #02231B #1B0223

tetradic

#231B02 #02230B #020A23 #23021B

square

#231B02 #02230B #020A23 #23021B

split-complementary

#231B02 #021B23 #0B0223

monochromatic

#1D1602 #1D1602 #231B02 #5D4805 #977409

Accessibility & contrast

On white

17.08

#231B02 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#231B02 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231B02

17.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231B02	#FFFFFF	#000000	##FFFFFF
##231B02	1.00	17.08	1.23	17.08
#FFFFFF	17.08	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F1A00

Deuteranopia (green-blind)

#211D03

Tritanopia (blue-blind)

#271816

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #231b02;
/* rgb */ color: rgb(35, 27, 2);
/* oklch */ color: oklch(22.6% 0.043 92.1);

Tailwind

colors: {
  custom: {
    50: '#5e5747',
    500: '#231b02',
    950: '#000000',
  },
}

SCSS

$custom: #231b02;
$custom-light: #5e5747;
$custom-dark: #000000;

JSON

{
  "hex": "#231b02",
  "rgb": {
    "r": 35,
    "g": 27,
    "b": 2
  },
  "hsl": {
    "h": 45.455,
    "s": 89.189,
    "l": 7.255
  },
  "oklch": {
    "l": 0.22555,
    "c": 0.04278,
    "h": 92.1
  },
  "luminance": 0.01146
}

Semantic roles & 50–950 ramp

primary

#231B02

secondary

#182C69

accent

#5DFF29

background

#F5F5F4

surface

#E9E9E6

border

#C5C5C2

text

#040300

muted

#797877

Preview Lab

Preview with #231B02

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

Preview Lab → · Contrast checker → · Palette generator →