#42387C#42387C

#42387C is a dark, moderate blue. Relative luminance 0.054; OKLCH L 38.8% C 0.111 H 286.8°. Best body text is #FFFFFF at 10.06:1 contrast (WCAG AA passes).

Color values

HEX	#42387C
RGB	rgb(66, 56, 124)
HSL	hsl(249, 38%, 35%)
HSV	hsv(249, 55%, 49%)
CMYK	cmyk(46.8%, 54.8%, 0%, 51.4%)
CIE-LAB	lab(27.96, 23.05, -37.39)
CIE-LCH	lch(27.96, 43.92, 301.65°)
OKLab	oklab(38.83% 0.0321 -0.1064)
OKLCH	oklch(38.83% 0.111 286.8)
XYZ	xyz(7.2980, 5.4415, 19.7307)
Luminance	0.0544 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42387C #727C38

analogous

#38507C #42387C #64387C

triadic

#42387C #7C4238 #387C42

tetradic

#42387C #7C3850 #727C38 #387C64

square

#42387C #7C3850 #727C38 #387C64

split-complementary

#42387C #7C6438 #507C38

monochromatic

#151228 #2C2552 #42387C #584BA6 #7C70BE

Accessibility & contrast

On white

10.06

#42387C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#42387C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42387C

10.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42387C	#FFFFFF	#000000	##FFFFFF
##42387C	1.00	10.06	2.09	10.06
#FFFFFF	10.06	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17447E

Deuteranopia (green-blind)

#16407A

Tritanopia (blue-blind)

#304754

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #42387c;
/* rgb */ color: rgb(66, 56, 124);
/* oklch */ color: oklch(38.8% 0.111 286.8);

Tailwind

colors: {
  custom: {
    50: '#7a6fa2',
    500: '#42387c',
    950: '#000000',
  },
}

SCSS

$custom: #42387c;
$custom-light: #7a6fa2;
$custom-dark: #000000;

JSON

{
  "hex": "#42387c",
  "rgb": {
    "r": 66,
    "g": 56,
    "b": 124
  },
  "hsl": {
    "h": 248.824,
    "s": 37.778,
    "l": 35.294
  },
  "oklch": {
    "l": 0.38832,
    "c": 0.11111,
    "h": 286.8
  },
  "luminance": 0.05442
}

Semantic roles & 50–950 ramp

primary

#42387C

secondary

#9EA768

accent

#CE5ABD

background

#F7F6FA

surface

#EEECF3

border

#C9C7CD

text

#0A070F

muted

#7C7A7F

Preview Lab

Preview with #42387C

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

Preview Lab → · Contrast checker → · Palette generator →