#42387A#42387A

#42387A is a dark, moderate blue. Relative luminance 0.054; OKLCH L 38.7% C 0.108 H 287.2°. Best body text is #FFFFFF at 10.10:1 contrast (WCAG AA passes).

Color values

HEX	#42387A
RGB	rgb(66, 56, 122)
HSL	hsl(249, 37%, 35%)
HSV	hsv(249, 54%, 48%)
CMYK	cmyk(45.9%, 54.1%, 0%, 52.2%)
CIE-LAB	lab(27.82, 22.40, -36.35)
CIE-LCH	lch(27.82, 42.70, 301.65°)
OKLab	oklab(38.69% 0.0319 -0.1033)
OKLCH	oklch(38.69% 0.108 287.2)
XYZ	xyz(7.1728, 5.3915, 19.0713)
Luminance	0.0539 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42387A #707A38

analogous

#384F7A #42387A #63387A

triadic

#42387A #7A4238 #387A42

tetradic

#42387A #7A384F #707A38 #387A63

square

#42387A #7A384F #707A38 #387A63

split-complementary

#42387A #7A6338 #4F7A38

monochromatic

#151126 #2B2550 #42387A #594BA4 #7B6FBD

Accessibility & contrast

On white

10.10

#42387A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#42387A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42387A

10.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42387A	#FFFFFF	#000000	##FFFFFF
##42387A	1.00	10.10	2.08	10.10
#FFFFFF	10.10	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A437C

Deuteranopia (green-blind)

#194079

Tritanopia (blue-blind)

#314653

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #42387a;
/* rgb */ color: rgb(66, 56, 122);
/* oklch */ color: oklch(38.7% 0.108 287.2);

Tailwind

colors: {
  custom: {
    50: '#7a6fa1',
    500: '#42387a',
    950: '#000000',
  },
}

SCSS

$custom: #42387a;
$custom-light: #7a6fa1;
$custom-dark: #000000;

JSON

{
  "hex": "#42387a",
  "rgb": {
    "r": 66,
    "g": 56,
    "b": 122
  },
  "hsl": {
    "h": 249.091,
    "s": 37.079,
    "l": 34.902
  },
  "oklch": {
    "l": 0.38687,
    "c": 0.10814,
    "h": 287.2
  },
  "luminance": 0.05392
}

Semantic roles & 50–950 ramp

primary

#42387A

secondary

#9DA668

accent

#CD5BBC

background

#F7F6F9

surface

#EEECF2

border

#C9C7CC

text

#09070F

muted

#7B7A7E

Preview Lab

Preview with #42387A

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

Preview Lab → · Contrast checker → · Palette generator →