#400F0B#400F0B

#400F0B is a dark, moderate red. Relative luminance 0.015; OKLCH L 25.3% C 0.077 H 28.4°. Best body text is #FFFFFF at 16.26:1 contrast (WCAG AA passes).

Color values

HEX	#400F0B
RGB	rgb(64, 15, 11)
HSL	hsl(5, 71%, 15%)
HSV	hsv(5, 83%, 25%)
CMYK	cmyk(0%, 76.6%, 82.8%, 74.9%)
CIE-LAB	lab(12.33, 23.48, 14.47)
CIE-LCH	lch(12.33, 27.58, 31.65°)
OKLab	oklab(25.32% 0.0677 0.0366)
OKLCH	oklch(25.32% 0.077 28.4)
XYZ	xyz(2.3458, 1.4561, 0.4741)
Luminance	0.0146 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#400F0B #0B3C40

analogous

#400B22 #400F0B #402A0B

triadic

#400F0B #0B400F #0F0B40

tetradic

#400F0B #22400B #0B3C40 #2A0B40

square

#400F0B #22400B #0B3C40 #2A0B40

split-complementary

#400F0B #0B402A #0B2240

monochromatic

#1A0604 #1A0604 #400F0B #741B14 #A8271D

Accessibility & contrast

On white

16.26

#400F0B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#400F0B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #400F0B

16.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##400F0B	#FFFFFF	#000000	##FFFFFF
##400F0B	1.00	16.26	1.29	16.26
#FFFFFF	16.26	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D190A

Deuteranopia (green-blind)

#292409

Tritanopia (blue-blind)

#47030E

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #400f0b;
/* rgb */ color: rgb(64, 15, 11);
/* oklch */ color: oklch(25.3% 0.077 28.4);

Tailwind

colors: {
  custom: {
    50: '#7a514b',
    500: '#400f0b',
    950: '#000000',
  },
}

SCSS

$custom: #400f0b;
$custom-light: #7a514b;
$custom-dark: #000000;

JSON

{
  "hex": "#400f0b",
  "rgb": {
    "r": 64,
    "g": 15,
    "b": 11
  },
  "hsl": {
    "h": 4.528,
    "s": 70.667,
    "l": 14.706
  },
  "oklch": {
    "l": 0.25319,
    "c": 0.07695,
    "h": 28.4
  },
  "luminance": 0.01456
}

Semantic roles & 50–950 ramp

primary

#400F0B

secondary

#2A767D

accent

#E0ED3A

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #400F0B

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

Preview Lab → · Contrast checker → · Palette generator →