#40101A#40101A

#40101A is a dark, moderate red. Relative luminance 0.015; OKLCH L 25.8% C 0.075 H 11.6°. Best body text is #FFFFFF at 16.07:1 contrast (WCAG AA passes).

Color values

HEX	#40101A
RGB	rgb(64, 16, 26)
HSL	hsl(348, 60%, 16%)
HSV	hsv(348, 75%, 25%)
CMYK	cmyk(0%, 75%, 59.4%, 74.9%)
CIE-LAB	lab(12.83, 24.15, 5.92)
CIE-LCH	lch(12.83, 24.87, 13.79°)
OKLab	oklab(25.8% 0.0731 0.015)
OKLCH	oklch(25.8% 0.075 11.6)
XYZ	xyz(2.4863, 1.5355, 1.1425)
Luminance	0.0154 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40101A #104036

analogous

#401032 #40101A #401E10

triadic

#40101A #1A4010 #101A40

tetradic

#40101A #324010 #104036 #1E1040

square

#40101A #324010 #104036 #1E1040

split-complementary

#40101A #10401E #103240

monochromatic

#18060A #18060A #40101A #711C2E #A22842

Accessibility & contrast

On white

16.07

#40101A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#40101A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40101A

16.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40101A	#FFFFFF	#000000	##FFFFFF
##40101A	1.00	16.07	1.31	16.07
#FFFFFF	16.07	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B1B1A

Deuteranopia (green-blind)

#282519

Tritanopia (blue-blind)

#470814

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #40101a;
/* rgb */ color: rgb(64, 16, 26);
/* oklch */ color: oklch(25.8% 0.075 11.6);

Tailwind

colors: {
  custom: {
    50: '#785256',
    500: '#40101a',
    950: '#000000',
  },
}

SCSS

$custom: #40101a;
$custom-light: #785256;
$custom-dark: #000000;

JSON

{
  "hex": "#40101a",
  "rgb": {
    "r": 64,
    "g": 16,
    "b": 26
  },
  "hsl": {
    "h": 347.5,
    "s": 60,
    "l": 15.686
  },
  "oklch": {
    "l": 0.25801,
    "c": 0.07461,
    "h": 11.6
  },
  "luminance": 0.01535
}

Semantic roles & 50–950 ramp

primary

#40101A

secondary

#327A6B

accent

#E3C245

background

#F7F4F5

surface

#EEE7E8

border

#C9C3C4

text

#090203

muted

#7B7878

Preview Lab

Preview with #40101A

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

Preview Lab → · Contrast checker → · Palette generator →