#40171C#40171C

#40171C is a dark, moderate red. Relative luminance 0.018; OKLCH L 26.9% C 0.064 H 15.0°. Best body text is #FFFFFF at 15.47:1 contrast (WCAG AA passes).

Color values

HEX	#40171C
RGB	rgb(64, 23, 28)
HSL	hsl(353, 47%, 17%)
HSV	hsv(353, 64%, 25%)
CMYK	cmyk(0%, 64.1%, 56.2%, 74.9%)
CIE-LAB	lab(14.33, 20.52, 6.52)
CIE-LCH	lch(14.33, 21.53, 17.62°)
OKLab	oklab(26.94% 0.0619 0.0166)
OKLCH	oklch(26.94% 0.064 15)
XYZ	xyz(2.6305, 1.7869, 1.3048)
Luminance	0.0179 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40171C #17403B

analogous

#401731 #40171C #402717

triadic

#40171C #1C4017 #171C40

tetradic

#40171C #314017 #17403B #271740

square

#40171C #314017 #17403B #271740

split-complementary

#40171C #174027 #173140

monochromatic

#17080A #17080A #40171C #6D2730 #9A3743

Accessibility & contrast

On white

15.47

#40171C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#40171C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40171C

15.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40171C	#FFFFFF	#000000	##FFFFFF
##40171C	1.00	15.47	1.36	15.47
#FFFFFF	15.47	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#201F1C

Deuteranopia (green-blind)

#2A271B

Tritanopia (blue-blind)

#461119

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #40171c;
/* rgb */ color: rgb(64, 23, 28);
/* oklch */ color: oklch(26.9% 0.064 15.0);

Tailwind

colors: {
  custom: {
    50: '#785657',
    500: '#40171c',
    950: '#000000',
  },
}

SCSS

$custom: #40171c;
$custom-light: #785657;
$custom-dark: #000000;

JSON

{
  "hex": "#40171c",
  "rgb": {
    "r": 64,
    "g": 23,
    "b": 28
  },
  "hsl": {
    "h": 352.683,
    "s": 47.126,
    "l": 17.059
  },
  "oklch": {
    "l": 0.26939,
    "c": 0.06405,
    "h": 15
  },
  "luminance": 0.01787
}

Semantic roles & 50–950 ramp

primary

#40171C

secondary

#3C7770

accent

#D7C651

background

#F7F5F5

surface

#EDE9E9

border

#C8C5C5

text

#090303

muted

#7B7878

Preview Lab

Preview with #40171C

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

Preview Lab → · Contrast checker → · Palette generator →