#40090B#40090B

#40090B is a very dark, moderate red. Relative luminance 0.013; OKLCH L 24.6% C 0.084 H 24.1°. Best body text is #FFFFFF at 16.64:1 contrast (WCAG AA passes).

Color values

HEX	#40090B
RGB	rgb(64, 9, 11)
HSL	hsl(358, 75%, 14%)
HSV	hsv(358, 86%, 25%)
CMYK	cmyk(0%, 85.9%, 82.8%, 74.9%)
CIE-LAB	lab(11.34, 26.18, 13.13)
CIE-LCH	lch(11.34, 29.29, 26.63°)
OKLab	oklab(24.59% 0.0762 0.0342)
OKLCH	oklch(24.59% 0.084 24.1)
XYZ	xyz(2.2727, 1.3099, 0.4497)
Luminance	0.0131 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40090B #09403E

analogous

#400927 #40090B #402309

triadic

#40090B #0B4009 #090B40

tetradic

#40090B #274009 #09403E #230940

square

#40090B #274009 #09403E #230940

split-complementary

#40090B #094023 #092740

monochromatic

#1B0405 #1B0405 #40090B #761114 #AB181D

Accessibility & contrast

On white

16.64

#40090B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#40090B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40090B

16.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40090B	#FFFFFF	#000000	##FFFFFF
##40090B	1.00	16.64	1.26	16.64
#FFFFFF	16.64	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#19170B

Deuteranopia (green-blind)

#272209

Tritanopia (blue-blind)

#47000A

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #40090b;
/* rgb */ color: rgb(64, 9, 11);
/* oklch */ color: oklch(24.6% 0.084 24.1);

Tailwind

colors: {
  custom: {
    50: '#7a4e4b',
    500: '#40090b',
    950: '#000000',
  },
}

SCSS

$custom: #40090b;
$custom-light: #7a4e4b;
$custom-dark: #000000;

JSON

{
  "hex": "#40090b",
  "rgb": {
    "r": 64,
    "g": 9,
    "b": 11
  },
  "hsl": {
    "h": 357.818,
    "s": 75.342,
    "l": 14.314
  },
  "oklch": {
    "l": 0.24586,
    "c": 0.08353,
    "h": 24.1
  },
  "luminance": 0.0131
}

Semantic roles & 50–950 ramp

primary

#40090B

secondary

#277E7B

accent

#F2EB36

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #40090B

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

Preview Lab → · Contrast checker → · Palette generator →