#40180F#40180F

#40180F is a dark, moderate red. Relative luminance 0.018; OKLCH L 26.8% C 0.065 H 34.1°. Best body text is #FFFFFF at 15.49:1 contrast (WCAG AA passes).

Color values

HEX	#40180F
RGB	rgb(64, 24, 15)
HSL	hsl(11, 62%, 15%)
HSV	hsv(11, 77%, 25%)
CMYK	cmyk(0%, 62.5%, 76.6%, 74.9%)
CIE-LAB	lab(14.28, 18.74, 15.15)
CIE-LCH	lch(14.28, 24.09, 38.95°)
OKLab	oklab(26.81% 0.0538 0.0364)
OKLCH	oklch(26.81% 0.065 34.1)
XYZ	xyz(2.5274, 1.7781, 0.6620)
Luminance	0.0178 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40180F #0F3740

analogous

#400F1E #40180F #40300F

triadic

#40180F #0F4018 #180F40

tetradic

#40180F #1E400F #0F3740 #300F40

square

#40180F #1E400F #0F3740 #300F40

split-complementary

#40180F #0F4030 #0F1E40

monochromatic

#190906 #190906 #40180F #722B1B #A33D26

Accessibility & contrast

On white

15.49

#40180F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#40180F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40180F

15.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40180F	#FFFFFF	#000000	##FFFFFF
##40180F	1.00	15.49	1.36	15.49
#FFFFFF	15.49	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#231F0E

Deuteranopia (green-blind)

#2C270E

Tritanopia (blue-blind)

#471016

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #40180f;
/* rgb */ color: rgb(64, 24, 15);
/* oklch */ color: oklch(26.8% 0.065 34.1);

Tailwind

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

SCSS

$custom: #40180f;
$custom-light: #79564e;
$custom-dark: #000000;

JSON

{
  "hex": "#40180f",
  "rgb": {
    "r": 64,
    "g": 24,
    "b": 15
  },
  "hsl": {
    "h": 11.02,
    "s": 62.025,
    "l": 15.49
  },
  "oklch": {
    "l": 0.2681,
    "c": 0.06501,
    "h": 34.1
  },
  "luminance": 0.01778
}

Semantic roles & 50–950 ramp

primary

#40180F

secondary

#306D7A

accent

#C7E543

background

#F7F5F4

surface

#EEE9E7

border

#C9C5C3

text

#090301

muted

#7B7877

Preview Lab

Preview with #40180F

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

Preview Lab → · Contrast checker → · Palette generator →