#42408E#42408E

#42408E is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.7% C 0.126 H 280.6°. Best body text is #FFFFFF at 8.91:1 contrast (WCAG AA passes).

Color values

HEX	#42408E
RGB	rgb(66, 64, 142)
HSL	hsl(242, 38%, 40%)
HSV	hsv(242, 55%, 56%)
CMYK	cmyk(53.5%, 54.9%, 0%, 44.3%)
CIE-LAB	lab(31.29, 23.71, -43.20)
CIE-LCH	lch(31.29, 49.28, 298.76°)
OKLab	oklab(41.72% 0.0231 -0.1234)
OKLCH	oklch(41.72% 0.126 280.6)
XYZ	xyz(8.9611, 6.7775, 26.4219)
Luminance	0.0678 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42408E #8C8E40

analogous

#40658E #42408E #69408E

triadic

#42408E #8E4240 #408E42

tetradic

#42408E #8E4065 #8C8E40 #408E69

square

#42408E #8E4065 #8C8E40 #408E69

split-complementary

#42408E #8E6940 #658E40

monochromatic

#1B1A3A #2E2D64 #42408E #5A58B4 #8482C7

Accessibility & contrast

On white

8.91

#42408E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#42408E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42408E

8.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42408E	#FFFFFF	#000000	##FFFFFF
##42408E	1.00	8.91	2.36	8.91
#FFFFFF	8.91	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#144D91

Deuteranopia (green-blind)

#08478C

Tritanopia (blue-blind)

#225260

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #42408e;
/* rgb */ color: rgb(66, 64, 142);
/* oklch */ color: oklch(41.7% 0.126 280.6);

Tailwind

colors: {
  custom: {
    50: '#7d75b0',
    500: '#42408e',
    950: '#000000',
  },
}

SCSS

$custom: #42408e;
$custom-light: #7d75b0;
$custom-dark: #000000;

JSON

{
  "hex": "#42408e",
  "rgb": {
    "r": 66,
    "g": 64,
    "b": 142
  },
  "hsl": {
    "h": 241.538,
    "s": 37.864,
    "l": 40.392
  },
  "oklch": {
    "l": 0.4172,
    "c": 0.12559,
    "h": 280.6
  },
  "luminance": 0.06778
}

Semantic roles & 50–950 ramp

primary

#42408E

secondary

#B0B179

accent

#CE5ACB

background

#F7F7FA

surface

#EEEDF5

border

#C9C8CF

text

#0A0810

muted

#7C7B7F

Preview Lab

Preview with #42408E

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

Preview Lab → · Contrast checker → · Palette generator →