#40183B#40183B

#40183B is a dark, moderate purple. Relative luminance 0.021; OKLCH L 28.4% C 0.080 H 332.5°. Best body text is #FFFFFF at 14.87:1 contrast (WCAG AA passes).

Color values

HEX	#40183B
RGB	rgb(64, 24, 59)
HSL	hsl(308, 45%, 17%)
HSV	hsv(308, 63%, 25%)
CMYK	cmyk(0%, 62.5%, 7.8%, 74.9%)
CIE-LAB	lab(15.79, 24.91, -13.63)
CIE-LCH	lch(15.79, 28.40, 331.32°)
OKLab	oklab(28.44% 0.0714 -0.0371)
OKLCH	oklch(28.44% 0.08 332.5)
XYZ	xyz(3.2304, 2.0592, 4.3642)
Luminance	0.0206 (WCAG relative)
Temperature	neutral
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40183B #18401D

analogous

#311840 #40183B #401827

triadic

#40183B #3B4018 #183B40

tetradic

#40183B #403118 #18401D #182740

square

#40183B #403118 #18401D #182740

split-complementary

#40183B #274018 #184031

monochromatic

#160815 #160815 #40183B #6D2964 #99398D

Accessibility & contrast

On white

14.87

#40183B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#40183B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40183B

14.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40183B	#FFFFFF	#000000	##FFFFFF
##40183B	1.00	14.87	1.41	14.87
#FFFFFF	14.87	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17243C

Deuteranopia (green-blind)

#23293A

Tritanopia (blue-blind)

#431B27

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #40183b;
/* rgb */ color: rgb(64, 24, 59);
/* oklch */ color: oklch(28.4% 0.080 332.5);

Tailwind

colors: {
  custom: {
    50: '#765771',
    500: '#40183b',
    950: '#000000',
  },
}

SCSS

$custom: #40183b;
$custom-light: #765771;
$custom-dark: #000000;

JSON

{
  "hex": "#40183b",
  "rgb": {
    "r": 64,
    "g": 24,
    "b": 59
  },
  "hsl": {
    "h": 307.5,
    "s": 45.455,
    "l": 17.255
  },
  "oklch": {
    "l": 0.28442,
    "c": 0.08044,
    "h": 332.5
  },
  "luminance": 0.02059
}

Semantic roles & 50–950 ramp

primary

#40183B

secondary

#3D7744

accent

#D56353

background

#F7F5F6

surface

#EDE9EC

border

#C8C5C7

text

#090307

muted

#7B787A

Preview Lab

Preview with #40183B

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

Preview Lab → · Contrast checker → · Palette generator →