#42359B#42359B

#42359B is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.8% C 0.159 H 282.5°. Best body text is #FFFFFF at 9.48:1 contrast (WCAG AA passes).

Color values

HEX	#42359B
RGB	rgb(66, 53, 155)
HSL	hsl(248, 49%, 41%)
HSV	hsv(248, 66%, 61%)
CMYK	cmyk(57.4%, 65.8%, 0%, 39.2%)
CIE-LAB	lab(29.59, 35.00, -53.92)
CIE-LCH	lch(29.59, 64.29, 302.99°)
OKLab	oklab(40.78% 0.0345 -0.155)
OKLCH	oklch(40.78% 0.159 282.5)
XYZ	xyz(9.4344, 6.0704, 31.6786)
Luminance	0.0607 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.81

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42359B #8E9B35

analogous

#355B9B #42359B #75359B

triadic

#42359B #9B4235 #359B42

tetradic

#42359B #9B355B #8E9B35 #359B75

square

#42359B #9B355B #8E9B35 #359B75

split-complementary

#42359B #9B7535 #5B9B35

monochromatic

#1B1640 #2F256D #42359B #5B4CC2 #8479D1

Accessibility & contrast

On white

9.48

#42359B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#42359B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42359B

9.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42359B	#FFFFFF	#000000	##FFFFFF
##42359B	1.00	9.48	2.21	9.48
#FFFFFF	9.48	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499E

Deuteranopia (green-blind)

#004299

Tritanopia (blue-blind)

#144F63

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #42359b;
/* rgb */ color: rgb(66, 53, 155);
/* oklch */ color: oklch(40.8% 0.159 282.5);

Tailwind

colors: {
  custom: {
    50: '#806db9',
    500: '#42359b',
    950: '#000000',
  },
}

SCSS

$custom: #42359b;
$custom-light: #806db9;
$custom-dark: #000000;

JSON

{
  "hex": "#42359b",
  "rgb": {
    "r": 66,
    "g": 53,
    "b": 155
  },
  "hsl": {
    "h": 247.647,
    "s": 49.038,
    "l": 40.784
  },
  "oklch": {
    "l": 0.40779,
    "c": 0.1588,
    "h": 282.5
  },
  "luminance": 0.06071
}

Semantic roles & 50–950 ramp

primary

#42359B

secondary

#B1BA72

accent

#D94FC7

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #42359B

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

Preview Lab → · Contrast checker → · Palette generator →