#42409A#42409A

#42409A is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.6% C 0.143 H 279.4°. Best body text is #FFFFFF at 8.64:1 contrast (WCAG AA passes).

Color values

HEX	#42409A
RGB	rgb(66, 64, 154)
HSL	hsl(241, 41%, 43%)
HSV	hsv(241, 58%, 60%)
CMYK	cmyk(57.1%, 58.4%, 0%, 39.6%)
CIE-LAB	lab(32.16, 27.74, -49.13)
CIE-LCH	lch(32.16, 56.42, 299.45°)
OKLab	oklab(42.64% 0.0234 -0.1409)
OKLCH	oklch(42.64% 0.143 279.4)
XYZ	xyz(9.9111, 7.1575, 31.4249)
Luminance	0.0716 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42409A #989A40

analogous

#406B9A #42409A #6F409A

triadic

#42409A #9A4240 #409A42

tetradic

#42409A #9A406B #989A40 #409A6F

square

#42409A #9A406B #989A40 #409A6F

split-complementary

#42409A #9A6F40 #6B9A40

monochromatic

#1D1C44 #2F2E6F #42409A #5E5CBB #8987CD

Accessibility & contrast

On white

8.64

#42409A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#42409A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42409A

8.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42409A	#FFFFFF	#000000	##FFFFFF
##42409A	1.00	8.64	2.43	8.64
#FFFFFF	8.64	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004F9D

Deuteranopia (green-blind)

#004898

Tritanopia (blue-blind)

#135566

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #42409a;
/* rgb */ color: rgb(66, 64, 154);
/* oklch */ color: oklch(42.6% 0.143 279.4);

Tailwind

colors: {
  custom: {
    50: '#7f75b8',
    500: '#42409a',
    950: '#000000',
  },
}

SCSS

$custom: #42409a;
$custom-light: #7f75b8;
$custom-dark: #000000;

JSON

{
  "hex": "#42409a",
  "rgb": {
    "r": 66,
    "g": 64,
    "b": 154
  },
  "hsl": {
    "h": 241.333,
    "s": 41.284,
    "l": 42.745
  },
  "oklch": {
    "l": 0.42642,
    "c": 0.14281,
    "h": 279.4
  },
  "luminance": 0.07158
}

Semantic roles & 50–950 ramp

primary

#42409A

secondary

#B7B87E

accent

#D157CE

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0811

muted

#7C7B80

Preview Lab

Preview with #42409A

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

Preview Lab → · Contrast checker → · Palette generator →