#42359A#42359A

#42359A is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.7% C 0.157 H 282.7°. Best body text is #FFFFFF at 9.51:1 contrast (WCAG AA passes).

Color values

HEX	#42359A
RGB	rgb(66, 53, 154)
HSL	hsl(248, 49%, 41%)
HSV	hsv(248, 66%, 60%)
CMYK	cmyk(57.1%, 65.6%, 0%, 39.6%)
CIE-LAB	lab(29.51, 34.68, -53.45)
CIE-LCH	lch(29.51, 63.71, 302.97°)
OKLab	oklab(40.69% 0.0346 -0.1536)
OKLCH	oklch(40.69% 0.157 282.7)
XYZ	xyz(9.3508, 6.0370, 31.2381)
Luminance	0.0604 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.95

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42359A #8D9A35

analogous

#355A9A #42359A #74359A

triadic

#42359A #9A4235 #359A42

tetradic

#42359A #9A355A #8D9A35 #359A74

square

#42359A #9A355A #8D9A35 #359A74

split-complementary

#42359A #9A7435 #5A9A35

monochromatic

#1B163F #2E256C #42359A #5A4BC1 #8479D1

Accessibility & contrast

On white

9.51

#42359A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#42359A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42359A

9.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42359A	#FFFFFF	#000000	##FFFFFF
##42359A	1.00	9.51	2.21	9.51
#FFFFFF	9.51	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499D

Deuteranopia (green-blind)

#004298

Tritanopia (blue-blind)

#164E62

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #42359a;
/* rgb */ color: rgb(66, 53, 154);
/* oklch */ color: oklch(40.7% 0.157 282.7);

Tailwind

colors: {
  custom: {
    50: '#7f6db9',
    500: '#42359a',
    950: '#000000',
  },
}

SCSS

$custom: #42359a;
$custom-light: #7f6db9;
$custom-dark: #000000;

JSON

{
  "hex": "#42359a",
  "rgb": {
    "r": 66,
    "g": 53,
    "b": 154
  },
  "hsl": {
    "h": 247.723,
    "s": 48.792,
    "l": 40.588
  },
  "oklch": {
    "l": 0.40692,
    "c": 0.15748,
    "h": 282.7
  },
  "luminance": 0.06038
}

Semantic roles & 50–950 ramp

primary

#42359A

secondary

#B0B971

accent

#D84FC7

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0711

muted

#7C7A80

Preview Lab

Preview with #42359A

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

Preview Lab → · Contrast checker → · Palette generator →