#42370C#42370C

#42370C is a dark, moderate yellow. Relative luminance 0.039; OKLCH L 33.9% C 0.061 H 94.3°. Best body text is #FFFFFF at 11.78:1 contrast (WCAG AA passes).

Color values

HEX	#42370C
RGB	rgb(66, 55, 12)
HSL	hsl(48, 69%, 15%)
HSV	hsv(48, 82%, 26%)
CMYK	cmyk(0%, 16.7%, 81.8%, 74.1%)
CIE-LAB	lab(23.40, -0.67, 27.32)
CIE-LCH	lch(23.40, 27.33, 91.40°)
OKLab	oklab(33.94% -0.0045 0.0606)
OKLCH	oklch(33.94% 0.061 94.3)
XYZ	xyz(3.6795, 3.9174, 0.9101)
Luminance	0.0392 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42370C #0C1742

analogous

#421C0C #42370C #32420C

triadic

#42370C #0C4237 #370C42

tetradic

#42370C #0C421C #0C1742 #420C32

square

#42370C #0C421C #0C1742 #420C32

split-complementary

#42370C #0C3242 #1C0C42

monochromatic

#1A1605 #1A1605 #42370C #766215 #AA8D1F

Accessibility & contrast

On white

11.78

#42370C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#42370C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42370C

11.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42370C	#FFFFFF	#000000	##FFFFFF
##42370C	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)

#3E3606

Deuteranopia (green-blind)

#40390E

Tritanopia (blue-blind)

#48322E

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #42370c;
/* rgb */ color: rgb(66, 55, 12);
/* oklch */ color: oklch(33.9% 0.061 94.3);

Tailwind

colors: {
  custom: {
    50: '#796d4e',
    500: '#42370c',
    950: '#000000',
  },
}

SCSS

$custom: #42370c;
$custom-light: #796d4e;
$custom-dark: #000000;

JSON

{
  "hex": "#42370c",
  "rgb": {
    "r": 66,
    "g": 55,
    "b": 12
  },
  "hsl": {
    "h": 47.778,
    "s": 69.231,
    "l": 15.294
  },
  "oklch": {
    "l": 0.33943,
    "c": 0.06079,
    "h": 94.3
  },
  "luminance": 0.03917
}

Semantic roles & 50–950 ramp

primary

#42370C

secondary

#2C3D7E

accent

#60EC3C

background

#F7F6F4

surface

#EEEBE7

border

#C9C6C3

text

#090702

muted

#7B7A78

Preview Lab

Preview with #42370C

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

Preview Lab → · Contrast checker → · Palette generator →