#42397D#42397D

#42397D is a dark, moderate blue. Relative luminance 0.056; OKLCH L 39.1% C 0.111 H 286.1°. Best body text is #FFFFFF at 9.94:1 contrast (WCAG AA passes).

Color values

HEX	#42397D
RGB	rgb(66, 57, 125)
HSL	hsl(248, 37%, 36%)
HSV	hsv(248, 54%, 49%)
CMYK	cmyk(47.2%, 54.4%, 0%, 51%)
CIE-LAB	lab(28.29, 22.71, -37.49)
CIE-LCH	lch(28.29, 43.83, 301.21°)
OKLab	oklab(39.1% 0.0308 -0.1067)
OKLCH	oklch(39.1% 0.111 286.1)
XYZ	xyz(7.4105, 5.5649, 20.0817)
Luminance	0.0556 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42397D #747D39

analogous

#39527D #42397D #64397D

triadic

#42397D #7D4239 #397D42

tetradic

#42397D #7D3952 #747D39 #397D64

square

#42397D #7D3952 #747D39 #397D64

split-complementary

#42397D #7D6439 #527D39

monochromatic

#161329 #2C2653 #42397D #584CA7 #7C72BF

Accessibility & contrast

On white

9.94

#42397D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#42397D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42397D

9.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42397D	#FFFFFF	#000000	##FFFFFF
##42397D	1.00	9.94	2.11	9.94
#FFFFFF	9.94	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#18457F

Deuteranopia (green-blind)

#17417C

Tritanopia (blue-blind)

#2F4855

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #42397d;
/* rgb */ color: rgb(66, 57, 125);
/* oklch */ color: oklch(39.1% 0.111 286.1);

Tailwind

colors: {
  custom: {
    50: '#7b6fa3',
    500: '#42397d',
    950: '#000000',
  },
}

SCSS

$custom: #42397d;
$custom-light: #7b6fa3;
$custom-dark: #000000;

JSON

{
  "hex": "#42397d",
  "rgb": {
    "r": 66,
    "g": 57,
    "b": 125
  },
  "hsl": {
    "h": 247.941,
    "s": 37.363,
    "l": 35.686
  },
  "oklch": {
    "l": 0.39099,
    "c": 0.11103,
    "h": 286.1
  },
  "luminance": 0.05565
}

Semantic roles & 50–950 ramp

primary

#42397D

secondary

#A0A86A

accent

#CD5ABE

background

#F7F6FA

surface

#EEECF4

border

#C9C7CE

text

#0A070F

muted

#7C7A7F

Preview Lab

Preview with #42397D

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

Preview Lab → · Contrast checker → · Palette generator →