#40170B#40170B

#40170B is a dark, moderate red. Relative luminance 0.017; OKLCH L 26.6% C 0.068 H 37.0°. Best body text is #FFFFFF at 15.61:1 contrast (WCAG AA passes).

Color values

HEX	#40170B
RGB	rgb(64, 23, 11)
HSL	hsl(14, 71%, 15%)
HSV	hsv(14, 83%, 25%)
CMYK	cmyk(0%, 64.1%, 82.8%, 74.9%)
CIE-LAB	lab(13.99, 19.08, 16.69)
CIE-LCH	lch(13.99, 25.35, 41.17°)
OKLab	oklab(26.57% 0.054 0.0406)
OKLCH	oklch(26.57% 0.068 37)
XYZ	xyz(2.4814, 1.7273, 0.5193)
Luminance	0.0173 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40170B #0B3440

analogous

#400B1A #40170B #40320B

triadic

#40170B #0B4017 #170B40

tetradic

#40170B #1A400B #0B3440 #320B40

square

#40170B #1A400B #0B3440 #320B40

split-complementary

#40170B #0B4032 #0B1A40

monochromatic

#1A0904 #1A0904 #40170B #742A14 #A83D1D

Accessibility & contrast

On white

15.61

#40170B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#40170B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40170B

15.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40170B	#FFFFFF	#000000	##FFFFFF
##40170B	1.00	15.61	1.35	15.61
#FFFFFF	15.61	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#221E0A

Deuteranopia (green-blind)

#2C270A

Tritanopia (blue-blind)

#470E14

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #40170b;
/* rgb */ color: rgb(64, 23, 11);
/* oklch */ color: oklch(26.6% 0.068 37.0);

Tailwind

colors: {
  custom: {
    50: '#79554b',
    500: '#40170b',
    950: '#000000',
  },
}

SCSS

$custom: #40170b;
$custom-light: #79554b;
$custom-dark: #000000;

JSON

{
  "hex": "#40170b",
  "rgb": {
    "r": 64,
    "g": 23,
    "b": 11
  },
  "hsl": {
    "h": 13.585,
    "s": 70.667,
    "l": 14.706
  },
  "oklch": {
    "l": 0.2657,
    "c": 0.06758,
    "h": 37
  },
  "luminance": 0.01727
}

Semantic roles & 50–950 ramp

primary

#40170B

secondary

#2A6A7D

accent

#C5ED3A

background

#F7F5F4

surface

#EEE9E7

border

#C9C5C3

text

#0A0301

muted

#7C7877

Preview Lab

Preview with #40170B

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

Preview Lab → · Contrast checker → · Palette generator →