#42389C#42389C

#42389C is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.4% C 0.156 H 281.6°. Best body text is #FFFFFF at 9.22:1 contrast (WCAG AA passes).

Color values

HEX	#42389C
RGB	rgb(66, 56, 156)
HSL	hsl(246, 47%, 42%)
HSV	hsv(246, 64%, 61%)
CMYK	cmyk(57.7%, 64.1%, 0%, 38.8%)
CIE-LAB	lab(30.37, 33.48, -53.26)
CIE-LCH	lch(30.37, 62.91, 302.15°)
OKLab	oklab(41.37% 0.0315 -0.1531)
OKLCH	oklch(41.37% 0.156 281.6)
XYZ	xyz(9.6598, 6.3863, 32.1697)
Luminance	0.0639 (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

#42389C #929C38

analogous

#38609C #42389C #74389C

triadic

#42389C #9C4238 #389C42

tetradic

#42389C #9C3860 #929C38 #389C74

square

#42389C #9C3860 #929C38 #389C74

split-complementary

#42389C #9C7438 #609C38

monochromatic

#1C1842 #2F286F #42389C #5C51C0 #867ED1

Accessibility & contrast

On white

9.22

#42389C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#42389C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42389C

9.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42389C	#FFFFFF	#000000	##FFFFFF
##42389C	1.00	9.22	2.28	9.22
#FFFFFF	9.22	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9F

Deuteranopia (green-blind)

#00449A

Tritanopia (blue-blind)

#125164

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #42389c;
/* rgb */ color: rgb(66, 56, 156);
/* oklch */ color: oklch(41.4% 0.156 281.6);

Tailwind

colors: {
  custom: {
    50: '#806fba',
    500: '#42389c',
    950: '#000000',
  },
}

SCSS

$custom: #42389c;
$custom-light: #806fba;
$custom-dark: #000000;

JSON

{
  "hex": "#42389c",
  "rgb": {
    "r": 66,
    "g": 56,
    "b": 156
  },
  "hsl": {
    "h": 246,
    "s": 47.17,
    "l": 41.569
  },
  "oklch": {
    "l": 0.4137,
    "c": 0.15628,
    "h": 281.6
  },
  "luminance": 0.06387
}

Semantic roles & 50–950 ramp

primary

#42389C

secondary

#B3BA76

accent

#D751C9

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #42389C

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

Preview Lab → · Contrast checker → · Palette generator →