#42380B#42380B

#42380B is a dark, moderate yellow. Relative luminance 0.040; OKLCH L 34.2% C 0.062 H 96.1°. Best body text is #FFFFFF at 11.65:1 contrast (WCAG AA passes).

Color values

HEX	#42380B
RGB	rgb(66, 56, 11)
HSL	hsl(49, 71%, 15%)
HSV	hsv(49, 83%, 26%)
CMYK	cmyk(0%, 15.2%, 83.3%, 74.1%)
CIE-LAB	lab(23.71, -1.37, 28.08)
CIE-LCH	lch(23.71, 28.11, 92.79°)
OKLab	oklab(34.19% -0.0067 0.062)
OKLCH	oklch(34.19% 0.062 96.1)
XYZ	xyz(3.7215, 4.0110, 0.8947)
Luminance	0.0401 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42380B #0B1542

analogous

#421C0B #42380B #30420B

triadic

#42380B #0B4238 #380B42

tetradic

#42380B #0B421C #0B1542 #420B30

square

#42380B #0B421C #0B1542 #420B30

split-complementary

#42380B #0B3042 #1C0B42

monochromatic

#1A1604 #1A1604 #42380B #766514 #AB911C

Accessibility & contrast

On white

11.65

#42380B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#42380B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42380B

11.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42380B	#FFFFFF	#000000	##FFFFFF
##42380B	1.00	11.65	1.80	11.65
#FFFFFF	11.65	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F3705

Deuteranopia (green-blind)

#413A0E

Tritanopia (blue-blind)

#48332F

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #42380b;
/* rgb */ color: rgb(66, 56, 11);
/* oklch */ color: oklch(34.2% 0.062 96.1);

Tailwind

colors: {
  custom: {
    50: '#796e4d',
    500: '#42380b',
    950: '#000000',
  },
}

SCSS

$custom: #42380b;
$custom-light: #796e4d;
$custom-dark: #000000;

JSON

{
  "hex": "#42380b",
  "rgb": {
    "r": 66,
    "g": 56,
    "b": 11
  },
  "hsl": {
    "h": 49.091,
    "s": 71.429,
    "l": 15.098
  },
  "oklch": {
    "l": 0.34186,
    "c": 0.06238,
    "h": 96.1
  },
  "luminance": 0.04011
}

Semantic roles & 50–950 ramp

primary

#42380B

secondary

#2A3A7F

accent

#5AEE3A

background

#F7F6F4

surface

#EEEBE7

border

#C9C6C3

text

#090701

muted

#7B7A77

Preview Lab

Preview with #42380B

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

Preview Lab → · Contrast checker → · Palette generator →