#40428E#40428E

#40428E is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.0% C 0.123 H 278.5°. Best body text is #FFFFFF at 8.79:1 contrast (WCAG AA passes).

Color values

HEX	#40428E
RGB	rgb(64, 66, 142)
HSL	hsl(238, 38%, 40%)
HSV	hsv(238, 55%, 56%)
CMYK	cmyk(54.9%, 53.5%, 0%, 44.3%)
CIE-LAB	lab(31.67, 21.96, -42.61)
CIE-LCH	lch(31.67, 47.94, 297.26°)
OKLab	oklab(41.96% 0.0183 -0.1217)
OKLCH	oklch(41.96% 0.123 278.5)
XYZ	xyz(8.9435, 6.9388, 26.4540)
Luminance	0.0694 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40428E #8E8C40

analogous

#40698E #40428E #65408E

triadic

#40428E #8E4042 #428E40

tetradic

#40428E #8E4069 #8E8C40 #408E65

square

#40428E #8E4069 #8E8C40 #408E65

split-complementary

#40428E #8E6540 #698E40

monochromatic

#1A1B3A #2D2E64 #40428E #585AB4 #8284C7

Accessibility & contrast

On white

8.79

#40428E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#40428E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40428E

8.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40428E	#FFFFFF	#000000	##FFFFFF
##40428E	1.00	8.79	2.39	8.79
#FFFFFF	8.79	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#194E91

Deuteranopia (green-blind)

#0D478C

Tritanopia (blue-blind)

#1C5361

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #40428e;
/* rgb */ color: rgb(64, 66, 142);
/* oklch */ color: oklch(42.0% 0.123 278.5);

Tailwind

colors: {
  custom: {
    50: '#7b76b0',
    500: '#40428e',
    950: '#000000',
  },
}

SCSS

$custom: #40428e;
$custom-light: #7b76b0;
$custom-dark: #000000;

JSON

{
  "hex": "#40428e",
  "rgb": {
    "r": 64,
    "g": 66,
    "b": 142
  },
  "hsl": {
    "h": 238.462,
    "s": 37.864,
    "l": 40.392
  },
  "oklch": {
    "l": 0.41959,
    "c": 0.1231,
    "h": 278.5
  },
  "luminance": 0.06939
}

Semantic roles & 50–950 ramp

primary

#40428E

secondary

#B1B079

accent

#CB5ACE

background

#F7F7FA

surface

#EEEDF5

border

#C9C8CF

text

#0A0810

muted

#7C7B7F

Preview Lab

Preview with #40428E

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

Preview Lab → · Contrast checker → · Palette generator →