#231B00#231B00

#231B00 is a very dark, muted yellow. Relative luminance 0.011; OKLCH L 22.5% C 0.046 H 93.6°. Best body text is #FFFFFF at 17.10:1 contrast (WCAG AA passes).

Color values

HEX	#231B00
RGB	rgb(35, 27, 0)
HSL	hsl(46, 100%, 7%)
HSV	hsv(46, 100%, 14%)
CMYK	cmyk(0%, 22.9%, 100%, 86.3%)
CIE-LAB	lab(10.12, 0.01, 15.11)
CIE-LCH	lch(10.12, 15.11, 89.96°)
OKLab	oklab(22.52% -0.0029 0.0461)
OKLCH	oklch(22.52% 0.046 93.6)
XYZ	xyz(1.0851, 1.1413, 0.1631)
Luminance	0.0114 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231B00 #000823

analogous

#230A00 #231B00 #1A2300

triadic

#231B00 #00231B #1B0023

tetradic

#231B00 #00230A #000823 #23001A

square

#231B00 #00230A #000823 #23001A

split-complementary

#231B00 #001A23 #0A0023

monochromatic

#1F1800 #1F1800 #231B00 #604A00 #9D7900

Accessibility & contrast

On white

17.10

#231B00 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#231B00 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231B00

17.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231B00	#FFFFFF	#000000	##FFFFFF
##231B00	1.00	17.10	1.23	17.10
#FFFFFF	17.10	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#201A00

Deuteranopia (green-blind)

#221D01

Tritanopia (blue-blind)

#271815

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #231b00;
/* rgb */ color: rgb(35, 27, 0);
/* oklch */ color: oklch(22.5% 0.046 93.6);

Tailwind

colors: {
  custom: {
    50: '#5e5746',
    500: '#231b00',
    950: '#000000',
  },
}

SCSS

$custom: #231b00;
$custom-light: #5e5746;
$custom-dark: #000000;

JSON

{
  "hex": "#231b00",
  "rgb": {
    "r": 35,
    "g": 27,
    "b": 0
  },
  "hsl": {
    "h": 46.286,
    "s": 100,
    "l": 6.863
  },
  "oklch": {
    "l": 0.22518,
    "c": 0.04614,
    "h": 93.6
  },
  "luminance": 0.01141
}

Semantic roles & 50–950 ramp

primary

#231B00

secondary

#13276C

accent

#5AFF29

background

#F5F5F3

surface

#E9E9E5

border

#C5C5C1

text

#040300

muted

#797877

Preview Lab

Preview with #231B00

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

Preview Lab → · Contrast checker → · Palette generator →