#40100E#40100E

#40100E is a dark, moderate red. Relative luminance 0.015; OKLCH L 25.5% C 0.075 H 26.3°. Best body text is #FFFFFF at 16.17:1 contrast (WCAG AA passes).

Color values

HEX	#40100E
RGB	rgb(64, 16, 14)
HSL	hsl(2, 64%, 15%)
HSV	hsv(2, 78%, 25%)
CMYK	cmyk(0%, 75%, 78.1%, 74.9%)
CIE-LAB	lab(12.56, 23.16, 13.39)
CIE-LCH	lch(12.56, 26.75, 30.03°)
OKLab	oklab(25.51% 0.0674 0.0333)
OKLCH	oklch(25.51% 0.075 26.3)
XYZ	xyz(2.3792, 1.4926, 0.5782)
Luminance	0.0149 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40100E #0E3E40

analogous

#400E25 #40100E #40290E

triadic

#40100E #0E4010 #100E40

tetradic

#40100E #25400E #0E3E40 #290E40

square

#40100E #25400E #0E3E40 #290E40

split-complementary

#40100E #0E4029 #0E2540

monochromatic

#190605 #190605 #40100E #721D19 #A42924

Accessibility & contrast

On white

16.17

#40100E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#40100E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40100E

16.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40100E	#FFFFFF	#000000	##FFFFFF
##40100E	1.00	16.17	1.30	16.17
#FFFFFF	16.17	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D1A0D

Deuteranopia (green-blind)

#29240D

Tritanopia (blue-blind)

#470510

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #40100e;
/* rgb */ color: rgb(64, 16, 14);
/* oklch */ color: oklch(25.5% 0.075 26.3);

Tailwind

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

SCSS

$custom: #40100e;
$custom-light: #79514d;
$custom-dark: #000000;

JSON

{
  "hex": "#40100e",
  "rgb": {
    "r": 64,
    "g": 16,
    "b": 14
  },
  "hsl": {
    "h": 2.4,
    "s": 64.103,
    "l": 15.294
  },
  "oklch": {
    "l": 0.25511,
    "c": 0.07518,
    "h": 26.3
  },
  "luminance": 0.01492
}

Semantic roles & 50–950 ramp

primary

#40100E

secondary

#2F787B

accent

#E0E741

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #40100E

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

Preview Lab → · Contrast checker → · Palette generator →