#42370A#42370A

#42370A is a dark, moderate yellow. Relative luminance 0.039; OKLCH L 33.9% C 0.062 H 94.7°. Best body text is #FFFFFF at 11.78:1 contrast (WCAG AA passes).

Color values

HEX	#42370A
RGB	rgb(66, 55, 10)
HSL	hsl(48, 74%, 15%)
HSV	hsv(48, 85%, 26%)
CMYK	cmyk(0%, 16.7%, 84.8%, 74.1%)
CIE-LAB	lab(23.38, -0.78, 28.17)
CIE-LCH	lch(23.38, 28.18, 91.59°)
OKLab	oklab(33.93% -0.0051 0.0621)
OKLCH	oklch(33.93% 0.062 94.7)
XYZ	xyz(3.6679, 3.9127, 0.8491)
Luminance	0.0391 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42370A #0A1542

analogous

#421B0A #42370A #31420A

triadic

#42370A #0A4237 #370A42

tetradic

#42370A #0A421B #0A1542 #420A31

square

#42370A #0A421B #0A1542 #420A31

split-complementary

#42370A #0A3142 #1B0A42

monochromatic

#1B1604 #1B1604 #42370A #776312 #AC901A

Accessibility & contrast

On white

11.78

#42370A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#42370A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42370A

11.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42370A	#FFFFFF	#000000	##FFFFFF
##42370A	1.00	11.78	1.78	11.78
#FFFFFF	11.78	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E3604

Deuteranopia (green-blind)

#41390D

Tritanopia (blue-blind)

#48322E

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #42370a;
/* rgb */ color: rgb(66, 55, 10);
/* oklch */ color: oklch(33.9% 0.062 94.7);

Tailwind

colors: {
  custom: {
    50: '#796d4d',
    500: '#42370a',
    950: '#000000',
  },
}

SCSS

$custom: #42370a;
$custom-light: #796d4d;
$custom-dark: #000000;

JSON

{
  "hex": "#42370a",
  "rgb": {
    "r": 66,
    "g": 55,
    "b": 10
  },
  "hsl": {
    "h": 48.214,
    "s": 73.684,
    "l": 14.902
  },
  "oklch": {
    "l": 0.33926,
    "c": 0.06228,
    "h": 94.7
  },
  "luminance": 0.03913
}

Semantic roles & 50–950 ramp

primary

#42370A

secondary

#293A7F

accent

#5CF037

background

#F7F6F4

surface

#EEEBE7

border

#C9C6C3

text

#090701

muted

#7B7A77

Preview Lab

Preview with #42370A

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

Preview Lab → · Contrast checker → · Palette generator →