#423F09#423F09

#423F09 is a dark, moderate yellow. Relative luminance 0.047; OKLCH L 36.0% C 0.071 H 106.1°. Best body text is #FFFFFF at 10.79:1 contrast (WCAG AA passes).

Color values

HEX	#423F09
RGB	rgb(66, 63, 9)
HSL	hsl(57, 76%, 15%)
HSV	hsv(57, 86%, 26%)
CMYK	cmyk(0%, 4.5%, 86.4%, 74.1%)
CIE-LAB	lab(25.96, -5.88, 31.07)
CIE-LCH	lch(25.96, 31.62, 100.72°)
OKLab	oklab(35.97% -0.0196 0.0678)
OKLCH	oklch(35.97% 0.071 106.1)
XYZ	xyz(4.0738, 4.7331, 0.9574)
Luminance	0.0473 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423F09 #090C42

analogous

#422309 #423F09 #294209

triadic

#423F09 #09423F #3F0942

tetradic

#423F09 #094223 #090C42 #420929

square

#423F09 #094223 #090C42 #420929

split-complementary

#423F09 #092942 #230942

monochromatic

#1B1A04 #1B1A04 #423F09 #787210 #AEA618

Accessibility & contrast

On white

10.79

#423F09 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#423F09 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423F09

10.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423F09	#FFFFFF	#000000	##FFFFFF
##423F09	1.00	10.79	1.95	10.79
#FFFFFF	10.79	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#453C01

Deuteranopia (green-blind)

#473E0D

Tritanopia (blue-blind)

#483A35

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #423f09;
/* rgb */ color: rgb(66, 63, 9);
/* oklch */ color: oklch(36.0% 0.071 106.1);

Tailwind

colors: {
  custom: {
    50: '#79734d',
    500: '#423f09',
    950: '#000000',
  },
}

SCSS

$custom: #423f09;
$custom-light: #79734d;
$custom-dark: #000000;

JSON

{
  "hex": "#423f09",
  "rgb": {
    "r": 66,
    "g": 63,
    "b": 9
  },
  "hsl": {
    "h": 56.842,
    "s": 76,
    "l": 14.706
  },
  "oklch": {
    "l": 0.35971,
    "c": 0.07064,
    "h": 106.1
  },
  "luminance": 0.04733
}

Semantic roles & 50–950 ramp

primary

#423F09

secondary

#272C80

accent

#3FF335

background

#F7F6F4

surface

#EEECE7

border

#C9C7C3

text

#090802

muted

#7B7B78

Preview Lab

Preview with #423F09

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

Preview Lab → · Contrast checker → · Palette generator →