#40101C#40101C

#40101C is a dark, moderate red. Relative luminance 0.015; OKLCH L 25.9% C 0.075 H 9.0°. Best body text is #FFFFFF at 16.05:1 contrast (WCAG AA passes).

Color values

HEX	#40101C
RGB	rgb(64, 16, 28)
HSL	hsl(345, 60%, 16%)
HSV	hsv(345, 75%, 25%)
CMYK	cmyk(0%, 75%, 56.2%, 74.9%)
CIE-LAB	lab(12.89, 24.36, 4.52)
CIE-LCH	lch(12.89, 24.78, 10.51°)
OKLab	oklab(25.86% 0.074 0.0117)
OKLCH	oklch(25.86% 0.075 9)
XYZ	xyz(2.5094, 1.5447, 1.2644)
Luminance	0.0154 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40101C #104034

analogous

#401034 #40101C #401C10

triadic

#40101C #1C4010 #101C40

tetradic

#40101C #344010 #104034 #1C1040

square

#40101C #344010 #104034 #1C1040

split-complementary

#40101C #10401C #103440

monochromatic

#18060B #18060B #40101C #711C31 #A22847

Accessibility & contrast

On white

16.05

#40101C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#40101C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40101C

16.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40101C	#FFFFFF	#000000	##FFFFFF
##40101C	1.00	16.05	1.31	16.05
#FFFFFF	16.05	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B1B1C

Deuteranopia (green-blind)

#27251B

Tritanopia (blue-blind)

#460815

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #40101c;
/* rgb */ color: rgb(64, 16, 28);
/* oklch */ color: oklch(25.9% 0.075 9.0);

Tailwind

colors: {
  custom: {
    50: '#785257',
    500: '#40101c',
    950: '#000000',
  },
}

SCSS

$custom: #40101c;
$custom-light: #785257;
$custom-dark: #000000;

JSON

{
  "hex": "#40101c",
  "rgb": {
    "r": 64,
    "g": 16,
    "b": 28
  },
  "hsl": {
    "h": 345,
    "s": 60,
    "l": 15.686
  },
  "oklch": {
    "l": 0.25863,
    "c": 0.07493,
    "h": 9
  },
  "luminance": 0.01544
}

Semantic roles & 50–950 ramp

primary

#40101C

secondary

#327A68

accent

#E3BC45

background

#F7F4F5

surface

#EEE7E9

border

#C9C3C5

text

#090203

muted

#7B7878

Preview Lab

Preview with #40101C

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

Preview Lab → · Contrast checker → · Palette generator →