#40288B#40288B

#40288B is a dark, vivid violet. Relative luminance 0.045; OKLCH L 37.1% C 0.154 H 287.5°. Best body text is #FFFFFF at 11.09:1 contrast (WCAG AA passes).

Color values

HEX	#40288B
RGB	rgb(64, 40, 139)
HSL	hsl(255, 55%, 35%)
HSV	hsv(255, 71%, 55%)
CMYK	cmyk(54%, 71.2%, 0%, 45.5%)
CIE-LAB	lab(25.17, 37.30, -51.30)
CIE-LCH	lch(25.17, 63.42, 306.02°)
OKLab	oklab(37.12% 0.0464 -0.1474)
OKLCH	oklch(37.12% 0.155 287.5)
XYZ	xyz(7.5320, 4.4713, 24.8873)
Luminance	0.0447 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40288B #738B28

analogous

#28428B #40288B #71288B

triadic

#40288B #8B4028 #288B40

tetradic

#40288B #8B2842 #738B28 #288B71

square

#40288B #8B2842 #738B28 #288B71

split-complementary

#40288B #8B7128 #428B28

monochromatic

#140D2C #2A1A5B #40288B #5636BB #795DD0

Accessibility & contrast

On white

11.09

#40288B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#40288B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40288B

11.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40288B	#FFFFFF	#000000	##FFFFFF
##40288B	1.00	11.09	1.89	11.09
#FFFFFF	11.09	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E8E

Deuteranopia (green-blind)

#003989

Tritanopia (blue-blind)

#234256

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #40288b;
/* rgb */ color: rgb(64, 40, 139);
/* oklch */ color: oklch(37.1% 0.154 287.5);

Tailwind

colors: {
  custom: {
    50: '#7d64ae',
    500: '#40288b',
    950: '#000000',
  },
}

SCSS

$custom: #40288b;
$custom-light: #7d64ae;
$custom-dark: #000000;

JSON

{
  "hex": "#40288b",
  "rgb": {
    "r": 64,
    "g": 40,
    "b": 139
  },
  "hsl": {
    "h": 254.545,
    "s": 55.307,
    "l": 35.098
  },
  "oklch": {
    "l": 0.3712,
    "c": 0.1545,
    "h": 287.5
  },
  "luminance": 0.04472
}

Semantic roles & 50–950 ramp

primary

#40288B

secondary

#9FB659

accent

#DF49BA

background

#F8F6FA

surface

#EFEBF4

border

#CAC6CE

text

#0A0510

muted

#7C7A7F

Preview Lab

Preview with #40288B

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

Preview Lab → · Contrast checker → · Palette generator →