#42379C#42379C

#42379C is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.2% C 0.158 H 281.9°. Best body text is #FFFFFF at 9.30:1 contrast (WCAG AA passes).

Color values

HEX	#42379C
RGB	rgb(66, 55, 156)
HSL	hsl(247, 48%, 41%)
HSV	hsv(247, 65%, 61%)
CMYK	cmyk(57.7%, 64.7%, 0%, 38.8%)
CIE-LAB	lab(30.13, 34.10, -53.64)
CIE-LCH	lch(30.13, 63.56, 302.44°)
OKLab	oklab(41.2% 0.0325 -0.1542)
OKLCH	oklch(41.2% 0.158 281.9)
XYZ	xyz(9.6118, 6.2903, 32.1537)
Luminance	0.0629 (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

#42379C #919C37

analogous

#375F9C #42379C #75379C

triadic

#42379C #9C4237 #379C42

tetradic

#42379C #9C375F #919C37 #379C75

square

#42379C #9C375F #919C37 #379C75

split-complementary

#42379C #9C7537 #5F9C37

monochromatic

#1C1742 #2F276F #42379C #5C4FC1 #867CD1

Accessibility & contrast

On white

9.30

#42379C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#42379C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42379C

9.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42379C	#FFFFFF	#000000	##FFFFFF
##42379C	1.00	9.30	2.26	9.30
#FFFFFF	9.30	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9F

Deuteranopia (green-blind)

#00439A

Tritanopia (blue-blind)

#125064

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #42379c;
/* rgb */ color: rgb(66, 55, 156);
/* oklch */ color: oklch(41.2% 0.158 281.9);

Tailwind

colors: {
  custom: {
    50: '#806eba',
    500: '#42379c',
    950: '#000000',
  },
}

SCSS

$custom: #42379c;
$custom-light: #806eba;
$custom-dark: #000000;

JSON

{
  "hex": "#42379c",
  "rgb": {
    "r": 66,
    "g": 55,
    "b": 156
  },
  "hsl": {
    "h": 246.535,
    "s": 47.867,
    "l": 41.373
  },
  "oklch": {
    "l": 0.412,
    "c": 0.15757,
    "h": 281.9
  },
  "luminance": 0.06291
}

Semantic roles & 50–950 ramp

primary

#42379C

secondary

#B3BA75

accent

#D750C9

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #42379C

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

Preview Lab → · Contrast checker → · Palette generator →