#40070B#40070B

#40070B is a very dark, moderate red. Relative luminance 0.013; OKLCH L 24.4% C 0.086 H 22.9°. Best body text is #FFFFFF at 16.76:1 contrast (WCAG AA passes).

Color values

HEX	#40070B
RGB	rgb(64, 7, 11)
HSL	hsl(356, 80%, 14%)
HSV	hsv(356, 89%, 25%)
CMYK	cmyk(0%, 89.1%, 82.8%, 74.9%)
CIE-LAB	lab(11.04, 27.04, 12.70)
CIE-LCH	lch(11.04, 29.87, 25.17°)
OKLab	oklab(24.36% 0.0789 0.0334)
OKLCH	oklch(24.36% 0.086 22.9)
XYZ	xyz(2.2510, 1.2665, 0.4425)
Luminance	0.0127 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40070B #07403C

analogous

#400728 #40070B #402007

triadic

#40070B #0B4007 #070B40

tetradic

#40070B #284007 #07403C #200740

square

#40070B #284007 #07403C #200740

split-complementary

#40070B #074020 #072840

monochromatic

#1C0305 #1C0305 #40070B #770D14 #AE131E

Accessibility & contrast

On white

16.76

#40070B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#40070B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40070B

16.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40070B	#FFFFFF	#000000	##FFFFFF
##40070B	1.00	16.76	1.25	16.76
#FFFFFF	16.76	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#18160B

Deuteranopia (green-blind)

#272209

Tritanopia (blue-blind)

#470009

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #40070b;
/* rgb */ color: rgb(64, 7, 11);
/* oklch */ color: oklch(24.4% 0.086 22.9);

Tailwind

colors: {
  custom: {
    50: '#7a4d4b',
    500: '#40070b',
    950: '#000000',
  },
}

SCSS

$custom: #40070b;
$custom-light: #7a4d4b;
$custom-dark: #000000;

JSON

{
  "hex": "#40070b",
  "rgb": {
    "r": 64,
    "g": 7,
    "b": 11
  },
  "hsl": {
    "h": 355.789,
    "s": 80.282,
    "l": 13.922
  },
  "oklch": {
    "l": 0.24359,
    "c": 0.08571,
    "h": 22.9
  },
  "luminance": 0.01266
}

Semantic roles & 50–950 ramp

primary

#40070B

secondary

#247F79

accent

#F7E931

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0101

muted

#7C7777

Preview Lab

Preview with #40070B

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

Preview Lab → · Contrast checker → · Palette generator →