#42427B#42427B

#42427B is a dark, moderate blue. Relative luminance 0.065; OKLCH L 40.8% C 0.094 H 281.4°. Best body text is #FFFFFF at 9.14:1 contrast (WCAG AA passes).

Color values

HEX	#42427B
RGB	rgb(66, 66, 123)
HSL	hsl(240, 30%, 37%)
HSV	hsv(240, 46%, 48%)
CMYK	cmyk(46.3%, 46.3%, 0%, 51.8%)
CIE-LAB	lab(30.60, 16.12, -32.53)
CIE-LCH	lch(30.60, 36.31, 296.36°)
OKLab	oklab(40.8% 0.0186 -0.0921)
OKLCH	oklch(40.8% 0.094 281.4)
XYZ	xyz(7.7691, 6.4844, 19.5773)
Luminance	0.0649 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42427B #7B7B42

analogous

#425F7B #42427B #5F427B

triadic

#42427B #7B4242 #427B42

tetradic

#42427B #7B425F #7B7B42 #427B5F

square

#42427B #7B425F #7B7B42 #427B5F

split-complementary

#42427B #7B5F42 #5F7B42

monochromatic

#17172B #2D2D53 #42427B #5757A3 #7E7EBA

Accessibility & contrast

On white

9.14

#42427B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#42427B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42427B

9.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42427B	#FFFFFF	#000000	##FFFFFF
##42427B	1.00	9.14	2.30	9.14
#FFFFFF	9.14	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C4A7D

Deuteranopia (green-blind)

#29467A

Tritanopia (blue-blind)

#2F4E58

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #42427b;
/* rgb */ color: rgb(66, 66, 123);
/* oklch */ color: oklch(40.8% 0.094 281.4);

Tailwind

colors: {
  custom: {
    50: '#7a76a1',
    500: '#42427b',
    950: '#000000',
  },
}

SCSS

$custom: #42427b;
$custom-light: #7a76a1;
$custom-dark: #000000;

JSON

{
  "hex": "#42427b",
  "rgb": {
    "r": 66,
    "g": 66,
    "b": 123
  },
  "hsl": {
    "h": 240,
    "s": 30.159,
    "l": 37.059
  },
  "oklch": {
    "l": 0.40802,
    "c": 0.09395,
    "h": 281.4
  },
  "luminance": 0.06485
}

Semantic roles & 50–950 ramp

primary

#42427B

secondary

#A5A574

accent

#C661C6

background

#F7F7FA

surface

#EEEDF3

border

#C9C8CD

text

#09080F

muted

#7B7B7F

Preview Lab

Preview with #42427B

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

Preview Lab → · Contrast checker → · Palette generator →