#40171D#40171D

#40171D is a dark, moderate red. Relative luminance 0.018; OKLCH L 27.0% C 0.064 H 13.4°. Best body text is #FFFFFF at 15.46:1 contrast (WCAG AA passes).

Color values

HEX	#40171D
RGB	rgb(64, 23, 29)
HSL	hsl(351, 47%, 17%)
HSV	hsv(351, 64%, 25%)
CMYK	cmyk(0%, 64.1%, 54.7%, 74.9%)
CIE-LAB	lab(14.35, 20.64, 5.83)
CIE-LCH	lch(14.35, 21.44, 15.78°)
OKLab	oklab(26.97% 0.0624 0.0149)
OKLCH	oklch(26.97% 0.064 13.4)
XYZ	xyz(2.6427, 1.7918, 1.3688)
Luminance	0.0179 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40171D #17403A

analogous

#401732 #40171D #402617

triadic

#40171D #1D4017 #171D40

tetradic

#40171D #324017 #17403A #261740

square

#40171D #324017 #17403A #261740

split-complementary

#40171D #174026 #173240

monochromatic

#17080A #17080A #40171D #6D2731 #9A3746

Accessibility & contrast

On white

15.46

#40171D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#40171D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40171D

15.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40171D	#FFFFFF	#000000	##FFFFFF
##40171D	1.00	15.46	1.36	15.46
#FFFFFF	15.46	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#201F1D

Deuteranopia (green-blind)

#2A271C

Tritanopia (blue-blind)

#461119

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #40171d;
/* rgb */ color: rgb(64, 23, 29);
/* oklch */ color: oklch(27.0% 0.064 13.4);

Tailwind

colors: {
  custom: {
    50: '#785658',
    500: '#40171d',
    950: '#000000',
  },
}

SCSS

$custom: #40171d;
$custom-light: #785658;
$custom-dark: #000000;

JSON

{
  "hex": "#40171d",
  "rgb": {
    "r": 64,
    "g": 23,
    "b": 29
  },
  "hsl": {
    "h": 351.22,
    "s": 47.126,
    "l": 17.059
  },
  "oklch": {
    "l": 0.26969,
    "c": 0.06412,
    "h": 13.4
  },
  "luminance": 0.01791
}

Semantic roles & 50–950 ramp

primary

#40171D

secondary

#3C776E

accent

#D7C351

background

#F7F5F5

surface

#EDE9E9

border

#C8C5C5

text

#090303

muted

#7B7878

Preview Lab

Preview with #40171D

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

Preview Lab → · Contrast checker → · Palette generator →