#40050B#40050B

#40050B is a very dark, moderate red. Relative luminance 0.012; OKLCH L 24.1% C 0.088 H 21.7°. Best body text is #FFFFFF at 16.87:1 contrast (WCAG AA passes).

Color values

HEX	#40050B
RGB	rgb(64, 5, 11)
HSL	hsl(354, 86%, 14%)
HSV	hsv(354, 92%, 25%)
CMYK	cmyk(0%, 92.2%, 82.8%, 74.9%)
CIE-LAB	lab(10.73, 27.92, 12.27)
CIE-LCH	lch(10.73, 30.50, 23.72°)
OKLab	oklab(24.13% 0.0818 0.0326)
OKLCH	oklch(24.13% 0.088 21.7)
XYZ	xyz(2.2293, 1.2231, 0.4352)
Luminance	0.0122 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40050B #05403A

analogous

#400528 #40050B #401C05

triadic

#40050B #0B4005 #050B40

tetradic

#40050B #284005 #05403A #1C0540

square

#40050B #284005 #05403A #1C0540

split-complementary

#40050B #05401C #052840

monochromatic

#1C0205 #1C0205 #40050B #790915 #B20E1F

Accessibility & contrast

On white

16.87

#40050B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#40050B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40050B

16.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40050B	#FFFFFF	#000000	##FFFFFF
##40050B	1.00	16.87	1.24	16.87
#FFFFFF	16.87	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17150B

Deuteranopia (green-blind)

#262109

Tritanopia (blue-blind)

#470008

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #40050b;
/* rgb */ color: rgb(64, 5, 11);
/* oklch */ color: oklch(24.1% 0.088 21.7);

Tailwind

colors: {
  custom: {
    50: '#7a4c4b',
    500: '#40050b',
    950: '#000000',
  },
}

SCSS

$custom: #40050b;
$custom-light: #7a4c4b;
$custom-dark: #000000;

JSON

{
  "hex": "#40050b",
  "rgb": {
    "r": 64,
    "g": 5,
    "b": 11
  },
  "hsl": {
    "h": 353.898,
    "s": 85.507,
    "l": 13.529
  },
  "oklch": {
    "l": 0.24128,
    "c": 0.08802,
    "h": 21.7
  },
  "luminance": 0.01223
}

Semantic roles & 50–950 ramp

primary

#40050B

secondary

#208177

accent

#FCE72C

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0101

muted

#7C7777

Preview Lab

Preview with #40050B

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

Preview Lab → · Contrast checker → · Palette generator →