#42379D#42379D

#42379D is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.3% C 0.159 H 281.8°. Best body text is #FFFFFF at 9.27:1 contrast (WCAG AA passes).

Color values

HEX	#42379D
RGB	rgb(66, 55, 157)
HSL	hsl(246, 48%, 42%)
HSV	hsv(246, 65%, 62%)
CMYK	cmyk(58%, 65%, 0%, 38.4%)
CIE-LAB	lab(30.22, 34.42, -54.12)
CIE-LCH	lch(30.22, 64.14, 302.46°)
OKLab	oklab(41.29% 0.0324 -0.1556)
OKLCH	oklch(41.29% 0.159 281.8)
XYZ	xyz(9.6969, 6.3243, 32.6015)
Luminance	0.0633 (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

#42379D #929D37

analogous

#375F9D #42379D #75379D

triadic

#42379D #9D4237 #379D42

tetradic

#42379D #9D375F #929D37 #379D75

square

#42379D #9D375F #929D37 #379D75

split-complementary

#42379D #9D7537 #5F9D37

monochromatic

#1C1742 #2F2770 #42379D #5C50C2 #867DD1

Accessibility & contrast

On white

9.27

#42379D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#42379D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42379D

9.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42379D	#FFFFFF	#000000	##FFFFFF
##42379D	1.00	9.27	2.27	9.27
#FFFFFF	9.27	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA0

Deuteranopia (green-blind)

#00439B

Tritanopia (blue-blind)

#105065

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #42379d;
/* rgb */ color: rgb(66, 55, 157);
/* oklch */ color: oklch(41.3% 0.159 281.8);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#42379d",
  "rgb": {
    "r": 66,
    "g": 55,
    "b": 157
  },
  "hsl": {
    "h": 246.471,
    "s": 48.113,
    "l": 41.569
  },
  "oklch": {
    "l": 0.41286,
    "c": 0.15891,
    "h": 281.8
  },
  "luminance": 0.06325
}

Semantic roles & 50–950 ramp

primary

#42379D

secondary

#B3BB75

accent

#D850C9

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #42379D

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

Preview Lab → · Contrast checker → · Palette generator →