#400307#400307

#400307 is a very dark, moderate red. Relative luminance 0.012; OKLCH L 23.8% C 0.091 H 24.1°. Best body text is #FFFFFF at 17.02:1 contrast (WCAG AA passes).

Color values

HEX	#400307
RGB	rgb(64, 3, 7)
HSL	hsl(356, 91%, 13%)
HSV	hsv(356, 95%, 25%)
CMYK	cmyk(0%, 95.3%, 89.1%, 74.9%)
CIE-LAB	lab(10.34, 28.65, 13.37)
CIE-LCH	lch(10.34, 31.61, 25.01°)
OKLab	oklab(23.82% 0.0829 0.0371)
OKLCH	oklch(23.82% 0.091 24.1)
XYZ	xyz(2.1855, 1.1708, 0.3119)
Luminance	0.0117 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#400307 #03403C

analogous

#400325 #400307 #401D03

triadic

#400307 #074003 #030740

tetradic

#400307 #254003 #03403C #1D0340

square

#400307 #254003 #03403C #1D0340

split-complementary

#400307 #03401D #032540

monochromatic

#1D0103 #1D0103 #400307 #7A060D #B50814

Accessibility & contrast

On white

17.02

#400307 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#400307 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #400307

17.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##400307	#FFFFFF	#000000	##FFFFFF
##400307	1.00	17.02	1.23	17.02
#FFFFFF	17.02	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#171407

Deuteranopia (green-blind)

#262105

Tritanopia (blue-blind)

#480005

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #400307;
/* rgb */ color: rgb(64, 3, 7);
/* oklch */ color: oklch(23.8% 0.091 24.1);

Tailwind

colors: {
  custom: {
    50: '#7a4b49',
    500: '#400307',
    950: '#000000',
  },
}

SCSS

$custom: #400307;
$custom-light: #7a4b49;
$custom-dark: #000000;

JSON

{
  "hex": "#400307",
  "rgb": {
    "r": 64,
    "g": 3,
    "b": 7
  },
  "hsl": {
    "h": 356.066,
    "s": 91.045,
    "l": 13.137
  },
  "oklch": {
    "l": 0.23821,
    "c": 0.0908,
    "h": 24.1
  },
  "luminance": 0.0117
}

Semantic roles & 50–950 ramp

primary

#400307

secondary

#1D827B

accent

#FFF129

background

#F7F4F4

surface

#EEE7E6

border

#C9C3C2

text

#0A0101

muted

#7C7777

Preview Lab

Preview with #400307

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

Preview Lab → · Contrast checker → · Palette generator →