#40180C#40180C

#40180C is a dark, moderate red. Relative luminance 0.018; OKLCH L 26.8% C 0.066 H 37.3°. Best body text is #FFFFFF at 15.51:1 contrast (WCAG AA passes).

Color values

HEX	#40180C
RGB	rgb(64, 24, 12)
HSL	hsl(14, 68%, 15%)
HSV	hsv(14, 81%, 25%)
CMYK	cmyk(0%, 62.5%, 81.2%, 74.9%)
CIE-LAB	lab(14.23, 18.54, 16.56)
CIE-LCH	lch(14.23, 24.86, 41.78°)
OKLab	oklab(26.76% 0.0526 0.0401)
OKLCH	oklch(26.76% 0.066 37.3)
XYZ	xyz(2.5076, 1.7701, 0.5574)
Luminance	0.0177 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40180C #0C3440

analogous

#400C1A #40180C #40320C

triadic

#40180C #0C4018 #180C40

tetradic

#40180C #1A400C #0C3440 #320C40

square

#40180C #1A400C #0C3440 #320C40

split-complementary

#40180C #0C4032 #0C1A40

monochromatic

#1A0A05 #1A0A05 #40180C #742B16 #A73F1F

Accessibility & contrast

On white

15.51

#40180C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#40180C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40180C

15.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40180C	#FFFFFF	#000000	##FFFFFF
##40180C	1.00	15.51	1.35	15.51
#FFFFFF	15.51	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#231F0B

Deuteranopia (green-blind)

#2D270B

Tritanopia (blue-blind)

#471015

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #40180c;
/* rgb */ color: rgb(64, 24, 12);
/* oklch */ color: oklch(26.8% 0.066 37.3);

Tailwind

colors: {
  custom: {
    50: '#79564c',
    500: '#40180c',
    950: '#000000',
  },
}

SCSS

$custom: #40180c;
$custom-light: #79564c;
$custom-dark: #000000;

JSON

{
  "hex": "#40180c",
  "rgb": {
    "r": 64,
    "g": 24,
    "b": 12
  },
  "hsl": {
    "h": 13.846,
    "s": 68.421,
    "l": 14.902
  },
  "oklch": {
    "l": 0.26762,
    "c": 0.06609,
    "h": 37.3
  },
  "luminance": 0.0177
}

Semantic roles & 50–950 ramp

primary

#40180C

secondary

#2C6A7C

accent

#C3EB3D

background

#F7F5F4

surface

#EEE9E7

border

#C9C5C3

text

#0A0301

muted

#7C7877

Preview Lab

Preview with #40180C

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

Preview Lab → · Contrast checker → · Palette generator →