#42180C#42180C

#42180C is a dark, moderate red. Relative luminance 0.018; OKLCH L 27.1% C 0.069 H 36.7°. Best body text is #FFFFFF at 15.36:1 contrast (WCAG AA passes).

Color values

HEX	#42180C
RGB	rgb(66, 24, 12)
HSL	hsl(13, 69%, 15%)
HSV	hsv(13, 82%, 26%)
CMYK	cmyk(0%, 63.6%, 81.8%, 74.1%)
CIE-LAB	lab(14.62, 19.46, 17.14)
CIE-LCH	lch(14.62, 25.93, 41.37°)
OKLab	oklab(27.13% 0.0552 0.0411)
OKLCH	oklch(27.13% 0.069 36.7)
XYZ	xyz(2.6400, 1.8384, 0.5636)
Luminance	0.0184 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42180C #0C3642

analogous

#420C1B #42180C #42330C

triadic

#42180C #0C4218 #180C42

tetradic

#42180C #1B420C #0C3642 #330C42

square

#42180C #1B420C #0C3642 #330C42

split-complementary

#42180C #0C4233 #0C1B42

monochromatic

#1A0905 #1A0905 #42180C #762B15 #AA3E1F

Accessibility & contrast

On white

15.36

#42180C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#42180C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42180C

15.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42180C	#FFFFFF	#000000	##FFFFFF
##42180C	1.00	15.36	1.37	15.36
#FFFFFF	15.36	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#231F0B

Deuteranopia (green-blind)

#2E280B

Tritanopia (blue-blind)

#490F15

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #42180c;
/* rgb */ color: rgb(66, 24, 12);
/* oklch */ color: oklch(27.1% 0.069 36.7);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#42180c",
  "rgb": {
    "r": 66,
    "g": 24,
    "b": 12
  },
  "hsl": {
    "h": 13.333,
    "s": 69.231,
    "l": 15.294
  },
  "oklch": {
    "l": 0.27128,
    "c": 0.06878,
    "h": 36.7
  },
  "luminance": 0.01838
}

Semantic roles & 50–950 ramp

primary

#42180C

secondary

#2C6C7E

accent

#C5EC3C

background

#F7F5F4

surface

#EEE9E7

border

#C9C5C3

text

#0A0301

muted

#7C7877

Preview Lab

Preview with #42180C

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

Preview Lab → · Contrast checker → · Palette generator →