#42428E#42428E

#42428E is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.1% C 0.123 H 279.8°. Best body text is #FFFFFF at 8.74:1 contrast (WCAG AA passes).

Color values

HEX	#42428E
RGB	rgb(66, 66, 142)
HSL	hsl(240, 37%, 41%)
HSV	hsv(240, 54%, 56%)
CMYK	cmyk(53.5%, 53.5%, 0%, 44.3%)
CIE-LAB	lab(31.82, 22.40, -42.35)
CIE-LCH	lch(31.82, 47.91, 297.88°)
OKLab	oklab(42.12% 0.0208 -0.1209)
OKLCH	oklch(42.12% 0.123 279.8)
XYZ	xyz(9.0760, 7.0071, 26.4602)
Luminance	0.0701 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42428E #8E8E42

analogous

#42688E #42428E #68428E

triadic

#42428E #8E4242 #428E42

tetradic

#42428E #8E4268 #8E8E42 #428E68

square

#42428E #8E4268 #8E8E42 #428E68

split-complementary

#42428E #8E6842 #688E42

monochromatic

#1B1B3A #2F2F64 #42428E #5B5BB3 #8484C6

Accessibility & contrast

On white

8.74

#42428E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#42428E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42428E

8.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42428E	#FFFFFF	#000000	##FFFFFF
##42428E	1.00	8.74	2.40	8.74
#FFFFFF	8.74	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A4E91

Deuteranopia (green-blind)

#10488C

Tritanopia (blue-blind)

#225361

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #42428e;
/* rgb */ color: rgb(66, 66, 142);
/* oklch */ color: oklch(42.1% 0.123 279.8);

Tailwind

colors: {
  custom: {
    50: '#7c76b0',
    500: '#42428e',
    950: '#000000',
  },
}

SCSS

$custom: #42428e;
$custom-light: #7c76b0;
$custom-dark: #000000;

JSON

{
  "hex": "#42428e",
  "rgb": {
    "r": 66,
    "g": 66,
    "b": 142
  },
  "hsl": {
    "h": 240,
    "s": 36.538,
    "l": 40.784
  },
  "oklch": {
    "l": 0.42115,
    "c": 0.12269,
    "h": 279.8
  },
  "luminance": 0.07008
}

Semantic roles & 50–950 ramp

primary

#42428E

secondary

#B1B17B

accent

#CD5BCD

background

#F7F7FA

surface

#EEEDF5

border

#C9C8CF

text

#0A0810

muted

#7C7B7F

Preview Lab

Preview with #42428E

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

Preview Lab → · Contrast checker → · Palette generator →