#400311#400311

#400311 is a very dark, moderate red. Relative luminance 0.012; OKLCH L 24.0% C 0.090 H 14.8°. Best body text is #FFFFFF at 16.95:1 contrast (WCAG AA passes).

Color values

HEX	#400311
RGB	rgb(64, 3, 17)
HSL	hsl(346, 91%, 13%)
HSV	hsv(346, 95%, 25%)
CMYK	cmyk(0%, 95.3%, 73.4%, 74.9%)
CIE-LAB	lab(10.53, 29.19, 8.96)
CIE-LCH	lch(10.53, 30.53, 17.06°)
OKLab	oklab(24.02% 0.0875 0.0231)
OKLCH	oklch(24.02% 0.09 14.8)
XYZ	xyz(2.2483, 1.1959, 0.6427)
Luminance	0.0120 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#400311 #034032

analogous

#40032F #400311 #401403

triadic

#400311 #114003 #031140

tetradic

#400311 #2F4003 #034032 #140340

square

#400311 #2F4003 #034032 #140340

split-complementary

#400311 #034014 #032F40

monochromatic

#1D0108 #1D0108 #400311 #7A0621 #B50830

Accessibility & contrast

On white

16.95

#400311 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#400311 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #400311

16.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##400311	#FFFFFF	#000000	##FFFFFF
##400311	1.00	16.95	1.24	16.95
#FFFFFF	16.95	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#151411

Deuteranopia (green-blind)

#25210F

Tritanopia (blue-blind)

#470008

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #400311;
/* rgb */ color: rgb(64, 3, 17);
/* oklch */ color: oklch(24.0% 0.090 14.8);

Tailwind

colors: {
  custom: {
    50: '#7a4b4f',
    500: '#400311',
    950: '#000000',
  },
}

SCSS

$custom: #400311;
$custom-light: #7a4b4f;
$custom-dark: #000000;

JSON

{
  "hex": "#400311",
  "rgb": {
    "r": 64,
    "g": 3,
    "b": 17
  },
  "hsl": {
    "h": 346.23,
    "s": 91.045,
    "l": 13.137
  },
  "oklch": {
    "l": 0.24019,
    "c": 0.09044,
    "h": 14.8
  },
  "luminance": 0.01196
}

Semantic roles & 50–950 ramp

primary

#400311

secondary

#1D826B

accent

#FFCE29

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0101

muted

#7C7777

Preview Lab

Preview with #400311

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

Preview Lab → · Contrast checker → · Palette generator →