#40428F#40428F

#40428F is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.0% C 0.125 H 278.5°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#40428F
RGB	rgb(64, 66, 143)
HSL	hsl(238, 38%, 41%)
HSV	hsv(238, 55%, 56%)
CMYK	cmyk(55.2%, 53.8%, 0%, 43.9%)
CIE-LAB	lab(31.74, 22.30, -43.12)
CIE-LCH	lch(31.74, 48.54, 297.35°)
OKLab	oklab(42.03% 0.0184 -0.1232)
OKLCH	oklch(42.03% 0.125 278.5)
XYZ	xyz(9.0189, 6.9690, 26.8512)
Luminance	0.0697 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40428F #8F8D40

analogous

#40698F #40428F #65408F

triadic

#40428F #8F4042 #428F40

tetradic

#40428F #8F4069 #8F8D40 #408F65

square

#40428F #8F4069 #8F8D40 #408F65

split-complementary

#40428F #8F6540 #698F40

monochromatic

#1A1B3A #2D2E65 #40428F #585AB4 #8284C7

Accessibility & contrast

On white

8.77

#40428F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#40428F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40428F

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40428F	#FFFFFF	#000000	##FFFFFF
##40428F	1.00	8.77	2.39	8.77
#FFFFFF	8.77	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#184E92

Deuteranopia (green-blind)

#0A488D

Tritanopia (blue-blind)

#1B5362

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #40428f;
/* rgb */ color: rgb(64, 66, 143);
/* oklch */ color: oklch(42.0% 0.125 278.5);

Tailwind

colors: {
  custom: {
    50: '#7c76b0',
    500: '#40428f',
    950: '#000000',
  },
}

SCSS

$custom: #40428f;
$custom-light: #7c76b0;
$custom-dark: #000000;

JSON

{
  "hex": "#40428f",
  "rgb": {
    "r": 64,
    "g": 66,
    "b": 143
  },
  "hsl": {
    "h": 238.481,
    "s": 38.164,
    "l": 40.588
  },
  "oklch": {
    "l": 0.42033,
    "c": 0.12458,
    "h": 278.5
  },
  "luminance": 0.0697
}

Semantic roles & 50–950 ramp

primary

#40428F

secondary

#B2B079

accent

#CB5ACE

background

#F7F7FA

surface

#EEEDF5

border

#C9C8CF

text

#0A0810

muted

#7C7B7F

Preview Lab

Preview with #40428F

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

Preview Lab → · Contrast checker → · Palette generator →