#42278B#42278B

#42278B is a dark, vivid violet. Relative luminance 0.045; OKLCH L 37.2% C 0.156 H 288.9°. Best body text is #FFFFFF at 11.08:1 contrast (WCAG AA passes).

Color values

HEX	#42278B
RGB	rgb(66, 39, 139)
HSL	hsl(256, 56%, 35%)
HSV	hsv(256, 72%, 55%)
CMYK	cmyk(52.5%, 71.9%, 0%, 45.5%)
CIE-LAB	lab(25.18, 38.21, -51.28)
CIE-LCH	lch(25.18, 63.95, 306.69°)
OKLab	oklab(37.17% 0.0503 -0.1472)
OKLCH	oklch(37.17% 0.156 288.9)
XYZ	xyz(7.6311, 4.4730, 24.8824)
Luminance	0.0447 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42278B #708B27

analogous

#273E8B #42278B #74278B

triadic

#42278B #8B4227 #278B42

tetradic

#42278B #8B273E #708B27 #278B74

square

#42278B #8B273E #708B27 #278B74

split-complementary

#42278B #8B7427 #3E8B27

monochromatic

#150C2B #2B1A5B #42278B #5934BB #7B5BD1

Accessibility & contrast

On white

11.08

#42278B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#42278B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42278B

11.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42278B	#FFFFFF	#000000	##FFFFFF
##42278B	1.00	11.08	1.89	11.08
#FFFFFF	11.08	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E8E

Deuteranopia (green-blind)

#003989

Tritanopia (blue-blind)

#274156

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #42278b;
/* rgb */ color: rgb(66, 39, 139);
/* oklch */ color: oklch(37.2% 0.156 288.9);

Tailwind

colors: {
  custom: {
    50: '#7e63ae',
    500: '#42278b',
    950: '#000000',
  },
}

SCSS

$custom: #42278b;
$custom-light: #7e63ae;
$custom-dark: #000000;

JSON

{
  "hex": "#42278b",
  "rgb": {
    "r": 66,
    "g": 39,
    "b": 139
  },
  "hsl": {
    "h": 256.2,
    "s": 56.18,
    "l": 34.902
  },
  "oklch": {
    "l": 0.37174,
    "c": 0.15561,
    "h": 288.9
  },
  "luminance": 0.04473
}

Semantic roles & 50–950 ramp

primary

#42278B

secondary

#9DB658

accent

#DF48B7

background

#F8F6FA

surface

#EFEBF4

border

#CAC6CE

text

#0B0510

muted

#7C7A7F

Preview Lab

Preview with #42278B

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

Preview Lab → · Contrast checker → · Palette generator →