#42400B#42400B

#42400B is a dark, moderate yellow. Relative luminance 0.048; OKLCH L 36.2% C 0.070 H 107.2°. Best body text is #FFFFFF at 10.66:1 contrast (WCAG AA passes).

Color values

HEX	#42400B
RGB	rgb(66, 64, 11)
HSL	hsl(58, 71%, 15%)
HSV	hsv(58, 83%, 26%)
CMYK	cmyk(0%, 3%, 83.3%, 74.1%)
CIE-LAB	lab(26.30, -6.40, 30.57)
CIE-LCH	lch(26.30, 31.24, 101.82°)
OKLab	oklab(36.25% -0.0209 0.0673)
OKLCH	oklch(36.25% 0.07 107.2)
XYZ	xyz(4.1407, 4.8493, 1.0344)
Luminance	0.0485 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42400B #0B0D42

analogous

#42240B #42400B #29420B

triadic

#42400B #0B4240 #400B42

tetradic

#42400B #0B4224 #0B0D42 #420B29

square

#42400B #0B4224 #0B0D42 #420B29

split-complementary

#42400B #0B2942 #240B42

monochromatic

#1A1904 #1A1904 #42400B #767314 #ABA61C

Accessibility & contrast

On white

10.66

#42400B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#42400B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42400B

10.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42400B	#FFFFFF	#000000	##FFFFFF
##42400B	1.00	10.66	1.97	10.66
#FFFFFF	10.66	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#463D03

Deuteranopia (green-blind)

#473F0F

Tritanopia (blue-blind)

#473B36

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #42400b;
/* rgb */ color: rgb(66, 64, 11);
/* oklch */ color: oklch(36.2% 0.070 107.2);

Tailwind

colors: {
  custom: {
    50: '#79744f',
    500: '#42400b',
    950: '#000000',
  },
}

SCSS

$custom: #42400b;
$custom-light: #79744f;
$custom-dark: #000000;

JSON

{
  "hex": "#42400b",
  "rgb": {
    "r": 66,
    "g": 64,
    "b": 11
  },
  "hsl": {
    "h": 57.818,
    "s": 71.429,
    "l": 15.098
  },
  "oklch": {
    "l": 0.36247,
    "c": 0.07042,
    "h": 107.2
  },
  "luminance": 0.04849
}

Semantic roles & 50–950 ramp

primary

#42400B

secondary

#2A2D7F

accent

#40EE3A

background

#F7F7F4

surface

#EEEDE7

border

#C9C8C3

text

#090802

muted

#7B7B78

Preview Lab

Preview with #42400B

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

Preview Lab → · Contrast checker → · Palette generator →