#42409D#42409D

#42409D is a dark, vivid blue. Relative luminance 0.073; OKLCH L 42.9% C 0.147 H 279.2°. Best body text is #FFFFFF at 8.57:1 contrast (WCAG AA passes).

Color values

HEX	#42409D
RGB	rgb(66, 64, 157)
HSL	hsl(241, 42%, 43%)
HSV	hsv(241, 59%, 62%)
CMYK	cmyk(58%, 59.2%, 0%, 38.4%)
CIE-LAB	lab(32.39, 28.75, -50.58)
CIE-LCH	lch(32.39, 58.19, 299.62°)
OKLab	oklab(42.88% 0.0234 -0.1451)
OKLCH	oklch(42.88% 0.147 279.2)
XYZ	xyz(10.1640, 7.2587, 32.7572)
Luminance	0.0726 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.79

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42409D #9B9D40

analogous

#406C9D #42409D #70409D

triadic

#42409D #9D4240 #409D42

tetradic

#42409D #9D406C #9B9D40 #409D70

square

#42409D #9D406C #9B9D40 #409D70

split-complementary

#42409D #9D7040 #6C9D40

monochromatic

#1D1D46 #302E72 #42409D #5F5DBD #8A89CF

Accessibility & contrast

On white

8.57

#42409D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#42409D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42409D

8.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42409D	#FFFFFF	#000000	##FFFFFF
##42409D	1.00	8.57	2.45	8.57
#FFFFFF	8.57	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A0

Deuteranopia (green-blind)

#00499B

Tritanopia (blue-blind)

#0D5668

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #42409d;
/* rgb */ color: rgb(66, 64, 157);
/* oklch */ color: oklch(42.9% 0.147 279.2);

Tailwind

colors: {
  custom: {
    50: '#7f75bb',
    500: '#42409d',
    950: '#000000',
  },
}

SCSS

$custom: #42409d;
$custom-light: #7f75bb;
$custom-dark: #000000;

JSON

{
  "hex": "#42409d",
  "rgb": {
    "r": 66,
    "g": 64,
    "b": 157
  },
  "hsl": {
    "h": 241.29,
    "s": 42.081,
    "l": 43.333
  },
  "oklch": {
    "l": 0.4288,
    "c": 0.14703,
    "h": 279.2
  },
  "luminance": 0.07259
}

Semantic roles & 50–950 ramp

primary

#42409D

secondary

#B8B97F

accent

#D256CF

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #42409D

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

Preview Lab → · Contrast checker → · Palette generator →