#231F03#231F03

#231F03 is a very dark, muted yellow. Relative luminance 0.013; OKLCH L 23.7% C 0.045 H 101.5°. Best body text is #FFFFFF at 16.55:1 contrast (WCAG AA passes).

Color values

HEX	#231F03
RGB	rgb(35, 31, 3)
HSL	hsl(53, 84%, 7%)
HSV	hsv(53, 91%, 14%)
CMYK	cmyk(0%, 11.4%, 91.4%, 86.3%)
CIE-LAB	lab(11.58, -2.46, 15.93)
CIE-LCH	lch(11.58, 16.12, 98.79°)
OKLab	oklab(23.69% -0.009 0.044)
OKLCH	oklch(23.69% 0.045 101.5)
XYZ	xyz(1.1996, 1.3439, 0.2823)
Luminance	0.0134 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231F03 #030723

analogous

#230F03 #231F03 #172303

triadic

#231F03 #03231F #1F0323

tetradic

#231F03 #03230F #030723 #230317

square

#231F03 #03230F #030723 #230317

split-complementary

#231F03 #031723 #0F0323

monochromatic

#1C1902 #1C1902 #231F03 #5B5108 #94830D

Accessibility & contrast

On white

16.55

#231F03 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#231F03 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231F03

16.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231F03	#FFFFFF	#000000	##FFFFFF
##231F03	1.00	16.55	1.27	16.55
#FFFFFF	16.55	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#231E01

Deuteranopia (green-blind)

#241F04

Tritanopia (blue-blind)

#271C19

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #231f03;
/* rgb */ color: rgb(35, 31, 3);
/* oklch */ color: oklch(23.7% 0.045 101.5);

Tailwind

colors: {
  custom: {
    50: '#5e5a48',
    500: '#231f03',
    950: '#000000',
  },
}

SCSS

$custom: #231f03;
$custom-light: #5e5a48;
$custom-dark: #000000;

JSON

{
  "hex": "#231f03",
  "rgb": {
    "r": 35,
    "g": 31,
    "b": 3
  },
  "hsl": {
    "h": 52.5,
    "s": 84.211,
    "l": 7.451
  },
  "oklch": {
    "l": 0.23692,
    "c": 0.04491,
    "h": 101.5
  },
  "luminance": 0.01344
}

Semantic roles & 50–950 ramp

primary

#231F03

secondary

#1B2467

accent

#47FA2D

background

#F5F5F4

surface

#E9E9E6

border

#C5C5C2

text

#040300

muted

#797877

Preview Lab

Preview with #231F03

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

Preview Lab → · Contrast checker → · Palette generator →