#40289B#40289B

#40289B is a dark, vivid violet. Relative luminance 0.050; OKLCH L 38.6% C 0.175 H 284.3°. Best body text is #FFFFFF at 10.53:1 contrast (WCAG AA passes).

Color values

HEX	#40289B
RGB	rgb(64, 40, 155)
HSL	hsl(253, 59%, 38%)
HSV	hsv(253, 74%, 61%)
CMYK	cmyk(58.7%, 74.2%, 0%, 39.2%)
CIE-LAB	lab(26.66, 42.21, -58.73)
CIE-LCH	lch(26.66, 72.32, 305.71°)
OKLab	oklab(38.63% 0.043 -0.1691)
OKLCH	oklch(38.63% 0.175 284.3)
XYZ	xyz(8.7877, 4.9736, 31.5009)
Luminance	0.0497 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40289B #839B28

analogous

#28499B #40289B #79289B

triadic

#40289B #9B4028 #289B40

tetradic

#40289B #9B2849 #839B28 #289B79

square

#40289B #9B2849 #839B28 #289B79

split-complementary

#40289B #9B7928 #499B28

monochromatic

#180F3A #2C1B6A #40289B #5435CB #7E66D7

Accessibility & contrast

On white

10.53

#40289B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#40289B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40289B

10.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40289B	#FFFFFF	#000000	##FFFFFF
##40289B	1.00	10.53	1.99	10.53
#FFFFFF	10.53	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00429E

Deuteranopia (green-blind)

#003B99

Tritanopia (blue-blind)

#0D485F

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #40289b;
/* rgb */ color: rgb(64, 40, 155);
/* oklch */ color: oklch(38.6% 0.175 284.3);

Tailwind

colors: {
  custom: {
    50: '#8065ba',
    500: '#40289b',
    950: '#000000',
  },
}

SCSS

$custom: #40289b;
$custom-light: #8065ba;
$custom-dark: #000000;

JSON

{
  "hex": "#40289b",
  "rgb": {
    "r": 64,
    "g": 40,
    "b": 155
  },
  "hsl": {
    "h": 252.522,
    "s": 58.974,
    "l": 38.235
  },
  "oklch": {
    "l": 0.38633,
    "c": 0.17452,
    "h": 284.3
  },
  "luminance": 0.04974
}

Semantic roles & 50–950 ramp

primary

#40289B

secondary

#AABD61

accent

#E246C1

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #40289B

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

Preview Lab → · Contrast checker → · Palette generator →