#401B5B#401B5B

#401B5B is a dark, moderate violet. Relative luminance 0.026; OKLCH L 31.1% C 0.112 H 307.7°. Best body text is #FFFFFF at 13.76:1 contrast (WCAG AA passes).

Color values

HEX	#401B5B
RGB	rgb(64, 27, 91)
HSL	hsl(275, 54%, 23%)
HSV	hsv(275, 70%, 36%)
CMYK	cmyk(29.7%, 70.3%, 0%, 64.3%)
CIE-LAB	lab(18.49, 30.78, -31.28)
CIE-LCH	lch(18.49, 43.88, 314.54°)
OKLab	oklab(31.08% 0.0684 -0.0885)
OKLCH	oklch(31.08% 0.112 307.7)
XYZ	xyz(4.3942, 2.6292, 10.1715)
Luminance	0.0263 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#401B5B #365B1B

analogous

#201B5B #401B5B #5B1B56

triadic

#401B5B #5B401B #1B5B40

tetradic

#401B5B #5B201B #365B1B #1B565B

square

#401B5B #5B201B #365B1B #1B565B

split-complementary

#401B5B #565B1B #1B5B20

monochromatic

#110718 #1F0D2C #401B5B #61298A #8237B9

Accessibility & contrast

On white

13.76

#401B5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#401B5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #401B5B

13.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##401B5B	#FFFFFF	#000000	##FFFFFF
##401B5B	1.00	13.76	1.53	13.76
#FFFFFF	13.76	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C5D

Deuteranopia (green-blind)

#0E2D5A

Tritanopia (blue-blind)

#3C2838

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #401b5b;
/* rgb */ color: rgb(64, 27, 91);
/* oklch */ color: oklch(31.1% 0.112 307.7);

Tailwind

colors: {
  custom: {
    50: '#785a8a',
    500: '#401b5b',
    950: '#000000',
  },
}

SCSS

$custom: #401b5b;
$custom-light: #785a8a;
$custom-dark: #000000;

JSON

{
  "hex": "#401b5b",
  "rgb": {
    "r": 64,
    "g": 27,
    "b": 91
  },
  "hsl": {
    "h": 274.688,
    "s": 54.237,
    "l": 23.137
  },
  "oklch": {
    "l": 0.31077,
    "c": 0.11184,
    "h": 307.7
  },
  "luminance": 0.02629
}

Semantic roles & 50–950 ramp

primary

#401B5B

secondary

#639141

accent

#DE4A88

background

#F7F5F8

surface

#EDE9F0

border

#C8C5CB

text

#09040C

muted

#7B797D

Preview Lab

Preview with #401B5B

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

Preview Lab → · Contrast checker → · Palette generator →