#423F05#423F05

#423F05 is a dark, moderate yellow. Relative luminance 0.047; OKLCH L 35.9% C 0.073 H 106.4°. Best body text is #FFFFFF at 10.80:1 contrast (WCAG AA passes).

Color values

HEX	#423F05
RGB	rgb(66, 63, 5)
HSL	hsl(57, 86%, 14%)
HSV	hsv(57, 92%, 26%)
CMYK	cmyk(0%, 4.5%, 92.4%, 74.1%)
CIE-LAB	lab(25.93, -6.09, 32.67)
CIE-LCH	lch(25.93, 33.23, 100.56°)
OKLab	oklab(35.94% -0.0207 0.0704)
OKLCH	oklch(35.94% 0.073 106.4)
XYZ	xyz(4.0518, 4.7244, 0.8420)
Luminance	0.0472 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423F05 #050842

analogous

#422105 #423F05 #274205

triadic

#423F05 #05423F #3F0542

tetradic

#423F05 #054221 #050842 #420527

square

#423F05 #054221 #050842 #420527

split-complementary

#423F05 #052742 #210542

monochromatic

#1C1B02 #1C1B02 #423F05 #7B7509 #B4AC0E

Accessibility & contrast

On white

10.80

#423F05 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#423F05 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423F05

10.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423F05	#FFFFFF	#000000	##FFFFFF
##423F05	1.00	10.80	1.94	10.80
#FFFFFF	10.80	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#453C00

Deuteranopia (green-blind)

#473E0A

Tritanopia (blue-blind)

#483A35

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #423f05;
/* rgb */ color: rgb(66, 63, 5);
/* oklch */ color: oklch(35.9% 0.073 106.4);

Tailwind

colors: {
  custom: {
    50: '#79734b',
    500: '#423f05',
    950: '#000000',
  },
}

SCSS

$custom: #423f05;
$custom-light: #79734b;
$custom-dark: #000000;

JSON

{
  "hex": "#423f05",
  "rgb": {
    "r": 66,
    "g": 63,
    "b": 5
  },
  "hsl": {
    "h": 57.049,
    "s": 85.915,
    "l": 13.922
  },
  "oklch": {
    "l": 0.35942,
    "c": 0.07334,
    "h": 106.4
  },
  "luminance": 0.04724
}

Semantic roles & 50–950 ramp

primary

#423F05

secondary

#202582

accent

#36FC2C

background

#F7F6F4

surface

#EEECE7

border

#C9C7C3

text

#090801

muted

#7B7B77

Preview Lab

Preview with #423F05

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

Preview Lab → · Contrast checker → · Palette generator →