#40289E#40289E

#40289E is a dark, vivid violet. Relative luminance 0.051; OKLCH L 38.9% C 0.178 H 283.7°. Best body text is #FFFFFF at 10.42:1 contrast (WCAG AA passes).

Color values

HEX	#40289E
RGB	rgb(64, 40, 158)
HSL	hsl(252, 60%, 39%)
HSV	hsv(252, 75%, 62%)
CMYK	cmyk(59.5%, 74.7%, 0%, 38%)
CIE-LAB	lab(26.95, 43.13, -60.08)
CIE-LCH	lch(26.95, 73.96, 305.67°)
OKLab	oklab(38.93% 0.0423 -0.1731)
OKLCH	oklch(38.93% 0.178 283.7)
XYZ	xyz(9.0428, 5.0756, 32.8443)
Luminance	0.0508 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40289E #869E28

analogous

#284B9E #40289E #7B289E

triadic

#40289E #9E4028 #289E40

tetradic

#40289E #9E284B #869E28 #289E7B

square

#40289E #9E284B #869E28 #289E7B

split-complementary

#40289E #9E7B28 #4B9E28

monochromatic

#180F3C #2C1C6D #40289E #5537CC #7F68D9

Accessibility & contrast

On white

10.42

#40289E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#40289E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40289E

10.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40289E	#FFFFFF	#000000	##FFFFFF
##40289E	1.00	10.42	2.02	10.42
#FFFFFF	10.42	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043A1

Deuteranopia (green-blind)

#003C9C

Tritanopia (blue-blind)

#054961

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #40289e;
/* rgb */ color: rgb(64, 40, 158);
/* oklch */ color: oklch(38.9% 0.178 283.7);

Tailwind

colors: {
  custom: {
    50: '#8065bc',
    500: '#40289e',
    950: '#000000',
  },
}

SCSS

$custom: #40289e;
$custom-light: #8065bc;
$custom-dark: #000000;

JSON

{
  "hex": "#40289e",
  "rgb": {
    "r": 64,
    "g": 40,
    "b": 158
  },
  "hsl": {
    "h": 252.203,
    "s": 59.596,
    "l": 38.824
  },
  "oklch": {
    "l": 0.38926,
    "c": 0.17819,
    "h": 283.7
  },
  "luminance": 0.05076
}

Semantic roles & 50–950 ramp

primary

#40289E

secondary

#ACBF63

accent

#E345C3

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #40289E

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

Preview Lab → · Contrast checker → · Palette generator →