#400B0F#400B0F

#400B0F is a very dark, moderate red. Relative luminance 0.014; OKLCH L 24.9% C 0.081 H 21.4°. Best body text is #FFFFFF at 16.50:1 contrast (WCAG AA passes).

Color values

HEX	#400B0F
RGB	rgb(64, 11, 15)
HSL	hsl(355, 71%, 15%)
HSV	hsv(355, 83%, 25%)
CMYK	cmyk(0%, 82.8%, 76.6%, 74.9%)
CIE-LAB	lab(11.72, 25.58, 11.72)
CIE-LCH	lch(11.72, 28.14, 24.62°)
OKLab	oklab(24.89% 0.0753 0.0296)
OKLCH	oklch(24.89% 0.081 21.4)
XYZ	xyz(2.3205, 1.3642, 0.5930)
Luminance	0.0136 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#400B0F #0B403C

analogous

#400B2A #400B0F #40220B

triadic

#400B0F #0F400B #0B0F40

tetradic

#400B0F #2A400B #0B403C #220B40

square

#400B0F #2A400B #0B403C #220B40

split-complementary

#400B0F #0B4022 #0B2A40

monochromatic

#1A0406 #1A0406 #400B0F #74141B #A81D27

Accessibility & contrast

On white

16.50

#400B0F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#400B0F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #400B0F

16.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##400B0F	#FFFFFF	#000000	##FFFFFF
##400B0F	1.00	16.50	1.27	16.50
#FFFFFF	16.50	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A180F

Deuteranopia (green-blind)

#27230D

Tritanopia (blue-blind)

#47000D

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #400b0f;
/* rgb */ color: rgb(64, 11, 15);
/* oklch */ color: oklch(24.9% 0.081 21.4);

Tailwind

colors: {
  custom: {
    50: '#7a4f4d',
    500: '#400b0f',
    950: '#000000',
  },
}

SCSS

$custom: #400b0f;
$custom-light: #7a4f4d;
$custom-dark: #000000;

JSON

{
  "hex": "#400b0f",
  "rgb": {
    "r": 64,
    "g": 11,
    "b": 15
  },
  "hsl": {
    "h": 355.472,
    "s": 70.667,
    "l": 14.706
  },
  "oklch": {
    "l": 0.24886,
    "c": 0.08094,
    "h": 21.4
  },
  "luminance": 0.01364
}

Semantic roles & 50–950 ramp

primary

#400B0F

secondary

#2A7D76

accent

#EDE03A

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #400B0F

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

Preview Lab → · Contrast checker → · Palette generator →