#40429D#40429D

#40429D is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.1% C 0.145 H 277.5°. Best body text is #FFFFFF at 8.45:1 contrast (WCAG AA passes).

Color values

HEX	#40429D
RGB	rgb(64, 66, 157)
HSL	hsl(239, 42%, 43%)
HSV	hsv(239, 59%, 62%)
CMYK	cmyk(59.2%, 58%, 0%, 38.4%)
CIE-LAB	lab(32.74, 27.08, -50.01)
CIE-LCH	lch(32.74, 56.88, 298.44°)
OKLab	oklab(43.11% 0.0189 -0.1435)
OKLCH	oklch(43.11% 0.145 277.5)
XYZ	xyz(10.1464, 7.4200, 32.7893)
Luminance	0.0742 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40429D #9D9B40

analogous

#40709D #40429D #6C409D

triadic

#40429D #9D4042 #429D40

tetradic

#40429D #9D4070 #9D9B40 #409D6C

square

#40429D #9D4070 #9D9B40 #409D6C

split-complementary

#40429D #9D6C40 #709D40

monochromatic

#1D1D46 #2E3072 #40429D #5D5FBD #898ACF

Accessibility & contrast

On white

8.45

#40429D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#40429D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40429D

8.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40429D	#FFFFFF	#000000	##FFFFFF
##40429D	1.00	8.45	2.48	8.45
#FFFFFF	8.45	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051A0

Deuteranopia (green-blind)

#00499B

Tritanopia (blue-blind)

#005869

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #40429d;
/* rgb */ color: rgb(64, 66, 157);
/* oklch */ color: oklch(43.1% 0.145 277.5);

Tailwind

colors: {
  custom: {
    50: '#7e76bb',
    500: '#40429d',
    950: '#000000',
  },
}

SCSS

$custom: #40429d;
$custom-light: #7e76bb;
$custom-dark: #000000;

JSON

{
  "hex": "#40429d",
  "rgb": {
    "r": 64,
    "g": 66,
    "b": 157
  },
  "hsl": {
    "h": 238.71,
    "s": 42.081,
    "l": 43.333
  },
  "oklch": {
    "l": 0.43106,
    "c": 0.14475,
    "h": 277.5
  },
  "luminance": 0.07421
}

Semantic roles & 50–950 ramp

primary

#40429D

secondary

#B9B87F

accent

#CF56D2

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #40429D

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

Preview Lab → · Contrast checker → · Palette generator →