#42379E#42379E

#42379E is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.4% C 0.160 H 281.6°. Best body text is #FFFFFF at 9.24:1 contrast (WCAG AA passes).

Color values

HEX	#42379E
RGB	rgb(66, 55, 158)
HSL	hsl(246, 48%, 42%)
HSV	hsv(246, 65%, 62%)
CMYK	cmyk(58.2%, 65.2%, 0%, 38%)
CIE-LAB	lab(30.30, 34.75, -54.59)
CIE-LCH	lch(30.30, 64.71, 302.48°)
OKLab	oklab(41.37% 0.0323 -0.157)
OKLCH	oklch(41.37% 0.16 281.6)
XYZ	xyz(9.7826, 6.3586, 33.0530)
Luminance	0.0636 (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

#42379E #939E37

analogous

#37609E #42379E #76379E

triadic

#42379E #9E4237 #379E42

tetradic

#42379E #9E3760 #939E37 #379E76

square

#42379E #9E3760 #939E37 #379E76

split-complementary

#42379E #9E7637 #609E37

monochromatic

#1C1743 #2F2771 #42379E #5C50C2 #877DD2

Accessibility & contrast

On white

9.24

#42379E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#42379E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42379E

9.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42379E	#FFFFFF	#000000	##FFFFFF
##42379E	1.00	9.24	2.27	9.24
#FFFFFF	9.24	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA1

Deuteranopia (green-blind)

#00449C

Tritanopia (blue-blind)

#0E5165

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #42379e;
/* rgb */ color: rgb(66, 55, 158);
/* oklch */ color: oklch(41.4% 0.160 281.6);

Tailwind

colors: {
  custom: {
    50: '#806ebb',
    500: '#42379e',
    950: '#000000',
  },
}

SCSS

$custom: #42379e;
$custom-light: #806ebb;
$custom-dark: #000000;

JSON

{
  "hex": "#42379e",
  "rgb": {
    "r": 66,
    "g": 55,
    "b": 158
  },
  "hsl": {
    "h": 246.408,
    "s": 48.357,
    "l": 41.765
  },
  "oklch": {
    "l": 0.41373,
    "c": 0.16025,
    "h": 281.6
  },
  "luminance": 0.06359
}

Semantic roles & 50–950 ramp

primary

#42379E

secondary

#B4BB76

accent

#D850C9

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #42379E

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

Preview Lab → · Contrast checker → · Palette generator →