#42370B#42370B

#42370B is a dark, moderate yellow. Relative luminance 0.039; OKLCH L 33.9% C 0.062 H 94.5°. Best body text is #FFFFFF at 11.78:1 contrast (WCAG AA passes).

Color values

HEX	#42370B
RGB	rgb(66, 55, 11)
HSL	hsl(48, 71%, 15%)
HSV	hsv(48, 83%, 26%)
CMYK	cmyk(0%, 16.7%, 83.3%, 74.1%)
CIE-LAB	lab(23.39, -0.73, 27.76)
CIE-LCH	lch(23.39, 27.77, 91.50°)
OKLab	oklab(33.93% -0.0048 0.0614)
OKLCH	oklch(33.93% 0.062 94.5)
XYZ	xyz(3.6736, 3.9150, 0.8787)
Luminance	0.0391 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42370B #0B1642

analogous

#421B0B #42370B #31420B

triadic

#42370B #0B4237 #370B42

tetradic

#42370B #0B421B #0B1642 #420B31

square

#42370B #0B421B #0B1642 #420B31

split-complementary

#42370B #0B3142 #1B0B42

monochromatic

#1A1604 #1A1604 #42370B #766314 #AB8E1C

Accessibility & contrast

On white

11.78

#42370B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#42370B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42370B

11.78:1 — WCAG AA (normal text) passes

Contrast matrix

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

#3E3605

Deuteranopia (green-blind)

#41390E

Tritanopia (blue-blind)

#48322E

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #42370b;
/* rgb */ color: rgb(66, 55, 11);
/* oklch */ color: oklch(33.9% 0.062 94.5);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#42370b",
  "rgb": {
    "r": 66,
    "g": 55,
    "b": 11
  },
  "hsl": {
    "h": 48,
    "s": 71.429,
    "l": 15.098
  },
  "oklch": {
    "l": 0.33934,
    "c": 0.06155,
    "h": 94.5
  },
  "luminance": 0.03915
}

Semantic roles & 50–950 ramp

primary

#42370B

secondary

#2A3B7F

accent

#5EEE3A

background

#F7F6F4

surface

#EEEBE7

border

#C9C6C3

text

#090701

muted

#7B7A77

Preview Lab

Preview with #42370B

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

Preview Lab → · Contrast checker → · Palette generator →