#42409E#42409E

#42409E is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.0% C 0.148 H 279.1°. Best body text is #FFFFFF at 8.54:1 contrast (WCAG AA passes).

Color values

HEX	#42409E
RGB	rgb(66, 64, 158)
HSL	hsl(241, 42%, 44%)
HSV	hsv(241, 59%, 62%)
CMYK	cmyk(58.2%, 59.5%, 0%, 38%)
CIE-LAB	lab(32.46, 29.09, -51.07)
CIE-LCH	lch(32.46, 58.77, 299.67°)
OKLab	oklab(42.96% 0.0234 -0.1466)
OKLCH	oklch(42.96% 0.148 279.1)
XYZ	xyz(10.2498, 7.2930, 33.2087)
Luminance	0.0729 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.65

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42409E #9C9E40

analogous

#406D9E #42409E #71409E

triadic

#42409E #9E4240 #409E42

tetradic

#42409E #9E406D #9C9E40 #409E71

square

#42409E #9E406D #9C9E40 #409E71

split-complementary

#42409E #9E7140 #6D9E40

monochromatic

#1E1D47 #302E72 #42409E #605EBE #8B89CF

Accessibility & contrast

On white

8.54

#42409E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#42409E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42409E

8.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42409E	#FFFFFF	#000000	##FFFFFF
##42409E	1.00	8.54	2.46	8.54
#FFFFFF	8.54	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A1

Deuteranopia (green-blind)

#00499C

Tritanopia (blue-blind)

#0B5668

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #42409e;
/* rgb */ color: rgb(66, 64, 158);
/* oklch */ color: oklch(43.0% 0.148 279.1);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#42409e",
  "rgb": {
    "r": 66,
    "g": 64,
    "b": 158
  },
  "hsl": {
    "h": 241.277,
    "s": 42.342,
    "l": 43.529
  },
  "oklch": {
    "l": 0.42961,
    "c": 0.14842,
    "h": 279.1
  },
  "luminance": 0.07294
}

Semantic roles & 50–950 ramp

primary

#42409E

secondary

#B9BA80

accent

#D256CF

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #42409E

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

Preview Lab → · Contrast checker → · Palette generator →