#423F0A#423F0A

#423F0A is a dark, moderate yellow. Relative luminance 0.047; OKLCH L 36.0% C 0.070 H 106.1°. Best body text is #FFFFFF at 10.79:1 contrast (WCAG AA passes).

Color values

HEX	#423F0A
RGB	rgb(66, 63, 10)
HSL	hsl(57, 74%, 15%)
HSV	hsv(57, 85%, 26%)
CMYK	cmyk(0%, 4.5%, 84.8%, 74.1%)
CIE-LAB	lab(25.97, -5.83, 30.67)
CIE-LCH	lch(25.97, 31.22, 100.77°)
OKLab	oklab(35.98% -0.0194 0.0672)
OKLCH	oklch(35.98% 0.07 106.1)
XYZ	xyz(4.0792, 4.7353, 0.9862)
Luminance	0.0474 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423F0A #0A0D42

analogous

#42230A #423F0A #29420A

triadic

#423F0A #0A423F #3F0A42

tetradic

#423F0A #0A4223 #0A0D42 #420A29

square

#423F0A #0A4223 #0A0D42 #420A29

split-complementary

#423F0A #0A2942 #230A42

monochromatic

#1B1904 #1B1904 #423F0A #777212 #ACA41A

Accessibility & contrast

On white

10.79

#423F0A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#423F0A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423F0A

10.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423F0A	#FFFFFF	#000000	##FFFFFF
##423F0A	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)

#453C02

Deuteranopia (green-blind)

#463E0E

Tritanopia (blue-blind)

#483A35

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #423f0a;
/* rgb */ color: rgb(66, 63, 10);
/* oklch */ color: oklch(36.0% 0.070 106.1);

Tailwind

colors: {
  custom: {
    50: '#79734e',
    500: '#423f0a',
    950: '#000000',
  },
}

SCSS

$custom: #423f0a;
$custom-light: #79734e;
$custom-dark: #000000;

JSON

{
  "hex": "#423f0a",
  "rgb": {
    "r": 66,
    "g": 63,
    "b": 10
  },
  "hsl": {
    "h": 56.786,
    "s": 73.684,
    "l": 14.902
  },
  "oklch": {
    "l": 0.35979,
    "c": 0.06997,
    "h": 106.1
  },
  "luminance": 0.04735
}

Semantic roles & 50–950 ramp

primary

#423F0A

secondary

#292D7F

accent

#41F037

background

#F7F6F4

surface

#EEECE7

border

#C9C7C3

text

#090802

muted

#7B7B78

Preview Lab

Preview with #423F0A

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

Preview Lab → · Contrast checker → · Palette generator →