#42408B#42408B

#42408B is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.5% C 0.121 H 280.9°. Best body text is #FFFFFF at 8.98:1 contrast (WCAG AA passes).

Color values

HEX	#42408B
RGB	rgb(66, 64, 139)
HSL	hsl(242, 37%, 40%)
HSV	hsv(242, 54%, 55%)
CMYK	cmyk(52.5%, 54%, 0%, 45.5%)
CIE-LAB	lab(31.09, 22.71, -41.69)
CIE-LCH	lch(31.09, 47.48, 298.58°)
OKLab	oklab(41.5% 0.023 -0.119)
OKLCH	oklch(41.5% 0.121 280.9)
XYZ	xyz(8.7389, 6.6886, 25.2516)
Luminance	0.0669 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42408B #898B40

analogous

#40648B #42408B #68408B

triadic

#42408B #8B4240 #408B42

tetradic

#42408B #8B4064 #898B40 #408B68

square

#42408B #8B4064 #898B40 #408B68

split-complementary

#42408B #8B6840 #648B40

monochromatic

#1A1937 #2E2D61 #42408B #5957B2 #8281C5

Accessibility & contrast

On white

8.98

#42408B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#42408B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42408B

8.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42408B	#FFFFFF	#000000	##FFFFFF
##42408B	1.00	8.98	2.34	8.98
#FFFFFF	8.98	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#184C8E

Deuteranopia (green-blind)

#104689

Tritanopia (blue-blind)

#25515F

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #42408b;
/* rgb */ color: rgb(66, 64, 139);
/* oklch */ color: oklch(41.5% 0.121 280.9);

Tailwind

colors: {
  custom: {
    50: '#7c75ad',
    500: '#42408b',
    950: '#000000',
  },
}

SCSS

$custom: #42408b;
$custom-light: #7c75ad;
$custom-dark: #000000;

JSON

{
  "hex": "#42408b",
  "rgb": {
    "r": 66,
    "g": 64,
    "b": 139
  },
  "hsl": {
    "h": 241.6,
    "s": 36.946,
    "l": 39.804
  },
  "oklch": {
    "l": 0.41498,
    "c": 0.12118,
    "h": 280.9
  },
  "luminance": 0.06689
}

Semantic roles & 50–950 ramp

primary

#42408B

secondary

#AEAF78

accent

#CD5BCA

background

#F7F7FA

surface

#EEEDF4

border

#C9C8CE

text

#0A0810

muted

#7C7B7F

Preview Lab

Preview with #42408B

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

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