#42359C#42359C

#42359C is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.9% C 0.160 H 282.4°. Best body text is #FFFFFF at 9.46:1 contrast (WCAG AA passes).

Color values

HEX	#42359C
RGB	rgb(66, 53, 156)
HSL	hsl(248, 49%, 41%)
HSV	hsv(248, 66%, 61%)
CMYK	cmyk(57.7%, 66%, 0%, 38.8%)
CIE-LAB	lab(29.67, 35.32, -54.39)
CIE-LCH	lch(29.67, 64.86, 303.00°)
OKLab	oklab(40.87% 0.0344 -0.1564)
OKLCH	oklch(40.87% 0.16 282.4)
XYZ	xyz(9.5188, 6.1042, 32.1227)
Luminance	0.0611 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42359C #8F9C35

analogous

#355B9C #42359C #75359C

triadic

#42359C #9C4235 #359C42

tetradic

#42359C #9C355B #8F9C35 #359C75

square

#42359C #9C355B #8F9C35 #359C75

split-complementary

#42359C #9C7535 #5B9C35

monochromatic

#1B1641 #2F256E #42359C #5B4CC2 #857AD2

Accessibility & contrast

On white

9.46

#42359C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#42359C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42359C

9.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42359C	#FFFFFF	#000000	##FFFFFF
##42359C	1.00	9.46	2.22	9.46
#FFFFFF	9.46	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499F

Deuteranopia (green-blind)

#00429A

Tritanopia (blue-blind)

#124F63

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #42359c;
/* rgb */ color: rgb(66, 53, 156);
/* oklch */ color: oklch(40.9% 0.160 282.4);

Tailwind

colors: {
  custom: {
    50: '#806dba',
    500: '#42359c',
    950: '#000000',
  },
}

SCSS

$custom: #42359c;
$custom-light: #806dba;
$custom-dark: #000000;

JSON

{
  "hex": "#42359c",
  "rgb": {
    "r": 66,
    "g": 53,
    "b": 156
  },
  "hsl": {
    "h": 247.573,
    "s": 49.282,
    "l": 40.98
  },
  "oklch": {
    "l": 0.40866,
    "c": 0.16014,
    "h": 282.4
  },
  "luminance": 0.06105
}

Semantic roles & 50–950 ramp

primary

#42359C

secondary

#B1BA72

accent

#D94FC7

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #42359C

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

Preview Lab → · Contrast checker → · Palette generator →