#423B0B#423B0B

#423B0B is a dark, moderate yellow. Relative luminance 0.043; OKLCH L 35.0% C 0.065 H 100.7°. Best body text is #FFFFFF at 11.28:1 contrast (WCAG AA passes).

Color values

HEX	#423B0B
RGB	rgb(66, 59, 11)
HSL	hsl(52, 71%, 15%)
HSV	hsv(52, 83%, 26%)
CMYK	cmyk(0%, 10.6%, 83.3%, 74.1%)
CIE-LAB	lab(24.67, -3.28, 29.03)
CIE-LCH	lch(24.67, 29.21, 96.45°)
OKLab	oklab(34.95% -0.0121 0.064)
OKLCH	oklch(34.95% 0.065 100.7)
XYZ	xyz(3.8713, 4.3105, 0.9446)
Luminance	0.0431 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423B0B #0B1242

analogous

#42200B #423B0B #2D420B

triadic

#423B0B #0B423B #3B0B42

tetradic

#423B0B #0B4220 #0B1242 #420B2D

square

#423B0B #0B4220 #0B1242 #420B2D

split-complementary

#423B0B #0B2D42 #200B42

monochromatic

#1A1704 #1A1704 #423B0B #766A14 #AB991C

Accessibility & contrast

On white

11.28

#423B0B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#423B0B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423B0B

11.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423B0B	#FFFFFF	#000000	##FFFFFF
##423B0B	1.00	11.28	1.86	11.28
#FFFFFF	11.28	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#413904

Deuteranopia (green-blind)

#433C0E

Tritanopia (blue-blind)

#483632

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #423b0b;
/* rgb */ color: rgb(66, 59, 11);
/* oklch */ color: oklch(35.0% 0.065 100.7);

Tailwind

colors: {
  custom: {
    50: '#79704e',
    500: '#423b0b',
    950: '#000000',
  },
}

SCSS

$custom: #423b0b;
$custom-light: #79704e;
$custom-dark: #000000;

JSON

{
  "hex": "#423b0b",
  "rgb": {
    "r": 66,
    "g": 59,
    "b": 11
  },
  "hsl": {
    "h": 52.364,
    "s": 71.429,
    "l": 15.098
  },
  "oklch": {
    "l": 0.34951,
    "c": 0.06511,
    "h": 100.7
  },
  "luminance": 0.0431
}

Semantic roles & 50–950 ramp

primary

#423B0B

secondary

#2A357F

accent

#51EE3A

background

#F7F6F4

surface

#EEECE7

border

#C9C7C3

text

#090702

muted

#7B7A78

Preview Lab

Preview with #423B0B

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

Preview Lab → · Contrast checker → · Palette generator →