#40100F#40100F

#40100F is a dark, moderate red. Relative luminance 0.015; OKLCH L 25.5% C 0.075 H 25.2°. Best body text is #FFFFFF at 16.17:1 contrast (WCAG AA passes).

Color values

HEX	#40100F
RGB	rgb(64, 16, 15)
HSL	hsl(1, 62%, 15%)
HSV	hsv(1, 77%, 25%)
CMYK	cmyk(0%, 75%, 76.6%, 74.9%)
CIE-LAB	lab(12.58, 23.22, 12.89)
CIE-LCH	lch(12.58, 26.56, 29.04°)
OKLab	oklab(25.53% 0.0679 0.0319)
OKLCH	oklch(25.53% 0.075 25.2)
XYZ	xyz(2.3861, 1.4954, 0.6148)
Luminance	0.0149 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40100F #0F3F40

analogous

#400F26 #40100F #40280F

triadic

#40100F #0F4010 #100F40

tetradic

#40100F #26400F #0F3F40 #280F40

square

#40100F #26400F #0F3F40 #280F40

split-complementary

#40100F #0F4028 #0F2640

monochromatic

#190606 #190606 #40100F #721C1B #A32926

Accessibility & contrast

On white

16.17

#40100F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#40100F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40100F

16.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40100F	#FFFFFF	#000000	##FFFFFF
##40100F	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)

#1D1A0E

Deuteranopia (green-blind)

#29250E

Tritanopia (blue-blind)

#470510

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #40100f;
/* rgb */ color: rgb(64, 16, 15);
/* oklch */ color: oklch(25.5% 0.075 25.2);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#40100f",
  "rgb": {
    "r": 64,
    "g": 16,
    "b": 15
  },
  "hsl": {
    "h": 1.224,
    "s": 62.025,
    "l": 15.49
  },
  "oklch": {
    "l": 0.2553,
    "c": 0.075,
    "h": 25.2
  },
  "luminance": 0.01495
}

Semantic roles & 50–950 ramp

primary

#40100F

secondary

#30797A

accent

#E2E543

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #40100F

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

Preview Lab → · Contrast checker → · Palette generator →