#40100C#40100C

#40100C is a dark, moderate red. Relative luminance 0.015; OKLCH L 25.5% C 0.076 H 28.3°. Best body text is #FFFFFF at 16.19:1 contrast (WCAG AA passes).

Color values

HEX	#40100C
RGB	rgb(64, 16, 12)
HSL	hsl(5, 68%, 15%)
HSV	hsv(5, 81%, 25%)
CMYK	cmyk(0%, 75%, 81.2%, 74.9%)
CIE-LAB	lab(12.53, 23.03, 14.30)
CIE-LCH	lch(12.53, 27.11, 31.84°)
OKLab	oklab(25.48% 0.0665 0.0359)
OKLCH	oklch(25.48% 0.076 28.3)
XYZ	xyz(2.3663, 1.4875, 0.5103)
Luminance	0.0149 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40100C #0C3C40

analogous

#400C22 #40100C #402A0C

triadic

#40100C #0C4010 #100C40

tetradic

#40100C #22400C #0C3C40 #2A0C40

square

#40100C #22400C #0C3C40 #2A0C40

split-complementary

#40100C #0C402A #0C2240

monochromatic

#1A0605 #1A0605 #40100C #741D16 #A72A1F

Accessibility & contrast

On white

16.19

#40100C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#40100C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40100C

16.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40100C	#FFFFFF	#000000	##FFFFFF
##40100C	1.00	16.19	1.30	16.19
#FFFFFF	16.19	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D1A0B

Deuteranopia (green-blind)

#29240A

Tritanopia (blue-blind)

#47040F

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #40100c;
/* rgb */ color: rgb(64, 16, 12);
/* oklch */ color: oklch(25.5% 0.076 28.3);

Tailwind

colors: {
  custom: {
    50: '#79514c',
    500: '#40100c',
    950: '#000000',
  },
}

SCSS

$custom: #40100c;
$custom-light: #79514c;
$custom-dark: #000000;

JSON

{
  "hex": "#40100c",
  "rgb": {
    "r": 64,
    "g": 16,
    "b": 12
  },
  "hsl": {
    "h": 4.615,
    "s": 68.421,
    "l": 14.902
  },
  "oklch": {
    "l": 0.25476,
    "c": 0.07558,
    "h": 28.3
  },
  "luminance": 0.01487
}

Semantic roles & 50–950 ramp

primary

#40100C

secondary

#2C767C

accent

#DEEB3D

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #40100C

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

Preview Lab → · Contrast checker → · Palette generator →