#42389E#42389E

#42389E is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.5% C 0.159 H 281.4°. Best body text is #FFFFFF at 9.17:1 contrast (WCAG AA passes).

Color values

HEX	#42389E
RGB	rgb(66, 56, 158)
HSL	hsl(246, 48%, 42%)
HSV	hsv(246, 65%, 62%)
CMYK	cmyk(58.2%, 64.6%, 0%, 38%)
CIE-LAB	lab(30.53, 34.14, -54.21)
CIE-LCH	lch(30.53, 64.06, 302.20°)
OKLab	oklab(41.54% 0.0313 -0.1558)
OKLCH	oklch(41.54% 0.159 281.4)
XYZ	xyz(9.8306, 6.4546, 33.0690)
Luminance	0.0645 (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

#42389E #949E38

analogous

#38619E #42389E #75389E

triadic

#42389E #9E4238 #389E42

tetradic

#42389E #9E3861 #949E38 #389E75

square

#42389E #9E3861 #949E38 #389E75

split-complementary

#42389E #9E7538 #619E38

monochromatic

#1C1844 #2F2871 #42389E #5D52C2 #877FD2

Accessibility & contrast

On white

9.17

#42389E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#42389E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42389E

9.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42389E	#FFFFFF	#000000	##FFFFFF
##42389E	1.00	9.17	2.29	9.17
#FFFFFF	9.17	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA1

Deuteranopia (green-blind)

#00449C

Tritanopia (blue-blind)

#0E5166

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #42389e;
/* rgb */ color: rgb(66, 56, 158);
/* oklch */ color: oklch(41.5% 0.159 281.4);

Tailwind

colors: {
  custom: {
    50: '#806fbb',
    500: '#42389e',
    950: '#000000',
  },
}

SCSS

$custom: #42389e;
$custom-light: #806fbb;
$custom-dark: #000000;

JSON

{
  "hex": "#42389e",
  "rgb": {
    "r": 66,
    "g": 56,
    "b": 158
  },
  "hsl": {
    "h": 245.882,
    "s": 47.664,
    "l": 41.961
  },
  "oklch": {
    "l": 0.41542,
    "c": 0.15897,
    "h": 281.4
  },
  "luminance": 0.06455
}

Semantic roles & 50–950 ramp

primary

#42389E

secondary

#B4BB77

accent

#D751CA

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #42389E

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

Preview Lab → · Contrast checker → · Palette generator →