#400F57#400F57

#400F57 is a dark, vivid purple. Relative luminance 0.021; OKLCH L 29.3% C 0.124 H 312.1°. Best body text is #FFFFFF at 14.75:1 contrast (WCAG AA passes).

Color values

HEX	#400F57
RGB	rgb(64, 15, 87)
HSL	hsl(281, 71%, 20%)
HSV	hsv(281, 83%, 34%)
CMYK	cmyk(26.4%, 82.8%, 0%, 65.9%)
CIE-LAB	lab(16.10, 35.61, -32.45)
CIE-LCH	lch(16.10, 48.18, 317.66°)
OKLab	oklab(29.28% 0.083 -0.0918)
OKLCH	oklch(29.28% 0.124 312.1)
XYZ	xyz(4.0052, 2.1199, 9.2132)
Luminance	0.0212 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Plum Purple

#4E0550

ΔE00 4.54

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#400F57 #26570F

analogous

#1C0F57 #400F57 #570F4A

triadic

#400F57 #57400F #0F5740

tetradic

#400F57 #571C0F #26570F #0F4A57

square

#400F57 #571C0F #26570F #0F4A57

split-complementary

#400F57 #4A570F #0F571C

monochromatic

#13051A #1A0623 #400F57 #66188B #8D21BF

Accessibility & contrast

On white

14.75

#400F57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#400F57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #400F57

14.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##400F57	#FFFFFF	#000000	##FFFFFF
##400F57	1.00	14.75	1.42	14.75
#FFFFFF	14.75	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002659

Deuteranopia (green-blind)

#042955

Tritanopia (blue-blind)

#3D2033

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #400f57;
/* rgb */ color: rgb(64, 15, 87);
/* oklch */ color: oklch(29.3% 0.124 312.1);

Tailwind

colors: {
  custom: {
    50: '#785487',
    500: '#400f57',
    950: '#000000',
  },
}

SCSS

$custom: #400f57;
$custom-light: #785487;
$custom-dark: #000000;

JSON

{
  "hex": "#400f57",
  "rgb": {
    "r": 64,
    "g": 15,
    "b": 87
  },
  "hsl": {
    "h": 280.833,
    "s": 70.588,
    "l": 20
  },
  "oklch": {
    "l": 0.29275,
    "c": 0.12378,
    "h": 312.1
  },
  "luminance": 0.0212
}

Semantic roles & 50–950 ramp

primary

#400F57

secondary

#509131

accent

#ED3A74

background

#F7F5F8

surface

#EEE9EF

border

#C9C5CA

text

#09030B

muted

#7B787C

Preview Lab

Preview with #400F57

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

Preview Lab → · Contrast checker → · Palette generator →