#42388E#42388E

#42388E is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.2% C 0.137 H 283.6°. Best body text is #FFFFFF at 9.60:1 contrast (WCAG AA passes).

Color values

HEX	#42388E
RGB	rgb(66, 56, 142)
HSL	hsl(247, 43%, 39%)
HSV	hsv(247, 61%, 56%)
CMYK	cmyk(53.5%, 60.6%, 0%, 44.3%)
CIE-LAB	lab(29.26, 28.88, -46.50)
CIE-LCH	lch(29.26, 54.74, 301.85°)
OKLab	oklab(40.21% 0.0323 -0.1332)
OKLCH	oklch(40.21% 0.137 283.6)
XYZ	xyz(8.5419, 5.9391, 26.2822)
Luminance	0.0594 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42388E #848E38

analogous

#38598E #42388E #6D388E

triadic

#42388E #8E4238 #388E42

tetradic

#42388E #8E3859 #848E38 #388E6D

square

#42388E #8E3859 #848E38 #388E6D

split-complementary

#42388E #8E6D38 #598E38

monochromatic

#191536 #2E2762 #42388E #584BB8 #8177C9

Accessibility & contrast

On white

9.60

#42388E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#42388E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42388E

9.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42388E	#FFFFFF	#000000	##FFFFFF
##42388E	1.00	9.60	2.19	9.60
#FFFFFF	9.60	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004891

Deuteranopia (green-blind)

#00428C

Tritanopia (blue-blind)

#234C5D

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #42388e;
/* rgb */ color: rgb(66, 56, 142);
/* oklch */ color: oklch(40.2% 0.137 283.6);

Tailwind

colors: {
  custom: {
    50: '#7d6fb0',
    500: '#42388e',
    950: '#000000',
  },
}

SCSS

$custom: #42388e;
$custom-light: #7d6fb0;
$custom-dark: #000000;

JSON

{
  "hex": "#42388e",
  "rgb": {
    "r": 66,
    "g": 56,
    "b": 142
  },
  "hsl": {
    "h": 246.977,
    "s": 43.434,
    "l": 38.824
  },
  "oklch": {
    "l": 0.4021,
    "c": 0.13703,
    "h": 283.6
  },
  "luminance": 0.0594
}

Semantic roles & 50–950 ramp

primary

#42388E

secondary

#ABB26F

accent

#D355C4

background

#F8F6FA

surface

#EFECF5

border

#CAC7CF

text

#0A0710

muted

#7C7A7F

Preview Lab

Preview with #42388E

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

Preview Lab → · Contrast checker → · Palette generator →