#42180D#42180D

#42180D is a dark, moderate red. Relative luminance 0.018; OKLCH L 27.1% C 0.068 H 35.7°. Best body text is #FFFFFF at 15.35:1 contrast (WCAG AA passes).

Color values

HEX	#42180D
RGB	rgb(66, 24, 13)
HSL	hsl(12, 67%, 15%)
HSV	hsv(12, 80%, 26%)
CMYK	cmyk(0%, 63.6%, 80.3%, 74.1%)
CIE-LAB	lab(14.63, 19.52, 16.69)
CIE-LCH	lch(14.63, 25.68, 40.53°)
OKLab	oklab(27.14% 0.0556 0.04)
OKLCH	oklch(27.14% 0.068 35.7)
XYZ	xyz(2.6463, 1.8409, 0.5967)
Luminance	0.0184 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42180D #0D3742

analogous

#420D1C #42180D #42320D

triadic

#42180D #0D4218 #180D42

tetradic

#42180D #1C420D #0D3742 #320D42

square

#42180D #1C420D #0D3742 #320D42

split-complementary

#42180D #0D4232 #0D1C42

monochromatic

#1A0905 #1A0905 #42180D #752B17 #A83D21

Accessibility & contrast

On white

15.35

#42180D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#42180D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42180D

15.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42180D	#FFFFFF	#000000	##FFFFFF
##42180D	1.00	15.35	1.37	15.35
#FFFFFF	15.35	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#231F0C

Deuteranopia (green-blind)

#2E280C

Tritanopia (blue-blind)

#490F16

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #42180d;
/* rgb */ color: rgb(66, 24, 13);
/* oklch */ color: oklch(27.1% 0.068 35.7);

Tailwind

colors: {
  custom: {
    50: '#7b564c',
    500: '#42180d',
    950: '#000000',
  },
}

SCSS

$custom: #42180d;
$custom-light: #7b564c;
$custom-dark: #000000;

JSON

{
  "hex": "#42180d",
  "rgb": {
    "r": 66,
    "g": 24,
    "b": 13
  },
  "hsl": {
    "h": 12.453,
    "s": 67.089,
    "l": 15.49
  },
  "oklch": {
    "l": 0.27143,
    "c": 0.06843,
    "h": 35.7
  },
  "luminance": 0.01841
}

Semantic roles & 50–950 ramp

primary

#42180D

secondary

#2D6D7E

accent

#C6EA3E

background

#F7F5F4

surface

#EEE9E7

border

#C9C5C3

text

#0A0301

muted

#7C7877

Preview Lab

Preview with #42180D

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

Preview Lab → · Contrast checker → · Palette generator →