#400603#400603

#400603 is a very dark, moderate red. Relative luminance 0.012; OKLCH L 24.1% C 0.088 H 29.8°. Best body text is #FFFFFF at 16.86:1 contrast (WCAG AA passes).

Color values

HEX	#400603
RGB	rgb(64, 6, 3)
HSL	hsl(3, 91%, 13%)
HSV	hsv(3, 95%, 25%)
CMYK	cmyk(0%, 90.6%, 95.3%, 74.9%)
CIE-LAB	lab(10.76, 27.08, 15.58)
CIE-LCH	lch(10.76, 31.24, 29.91°)
OKLab	oklab(24.11% 0.0765 0.0438)
OKLCH	oklch(24.11% 0.088 29.8)
XYZ	xyz(2.1962, 1.2272, 0.2074)
Luminance	0.0123 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#400603 #033D40

analogous

#40031E #400603 #402403

triadic

#400603 #034006 #060340

tetradic

#400603 #1E4003 #033D40 #240340

square

#400603 #1E4003 #033D40 #240340

split-complementary

#400603 #034024 #031E40

monochromatic

#1D0301 #1D0301 #400603 #7A0B06 #B51108

Accessibility & contrast

On white

16.86

#400603 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#400603 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #400603

16.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##400603	#FFFFFF	#000000	##FFFFFF
##400603	1.00	16.86	1.25	16.86
#FFFFFF	16.86	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#191502

Deuteranopia (green-blind)

#272201

Tritanopia (blue-blind)

#480006

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #400603;
/* rgb */ color: rgb(64, 6, 3);
/* oklch */ color: oklch(24.1% 0.088 29.8);

Tailwind

colors: {
  custom: {
    50: '#7a4c48',
    500: '#400603',
    950: '#000000',
  },
}

SCSS

$custom: #400603;
$custom-light: #7a4c48;
$custom-dark: #000000;

JSON

{
  "hex": "#400603",
  "rgb": {
    "r": 64,
    "g": 6,
    "b": 3
  },
  "hsl": {
    "h": 2.951,
    "s": 91.045,
    "l": 13.137
  },
  "oklch": {
    "l": 0.24109,
    "c": 0.08817,
    "h": 29.8
  },
  "luminance": 0.01227
}

Semantic roles & 50–950 ramp

primary

#400603

secondary

#1D7D82

accent

#F4FF29

background

#F7F4F4

surface

#EEE7E6

border

#C9C3C2

text

#0A0100

muted

#7C7777

Preview Lab

Preview with #400603

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

Preview Lab → · Contrast checker → · Palette generator →