#42387F#42387F

#42387F is a dark, moderate blue. Relative luminance 0.055; OKLCH L 39.1% C 0.116 H 286.2°. Best body text is #FFFFFF at 9.98:1 contrast (WCAG AA passes).

Color values

HEX	#42387F
RGB	rgb(66, 56, 127)
HSL	hsl(248, 39%, 36%)
HSV	hsv(248, 56%, 50%)
CMYK	cmyk(48%, 55.9%, 0%, 50.2%)
CIE-LAB	lab(28.16, 24.01, -38.94)
CIE-LCH	lch(28.16, 45.75, 301.66°)
OKLab	oklab(39.05% 0.0322 -0.1109)
OKLCH	oklch(39.05% 0.116 286.2)
XYZ	xyz(7.4906, 5.5186, 20.7451)
Luminance	0.0552 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42387F #757F38

analogous

#38517F #42387F #65387F

triadic

#42387F #7F4238 #387F42

tetradic

#42387F #7F3851 #757F38 #387F65

square

#42387F #7F3851 #757F38 #387F65

split-complementary

#42387F #7F6538 #517F38

monochromatic

#16132A #2C2555 #42387F #584BA9 #7C71C0

Accessibility & contrast

On white

9.98

#42387F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#42387F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42387F

9.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42387F	#FFFFFF	#000000	##FFFFFF
##42387F	1.00	9.98	2.10	9.98
#FFFFFF	9.98	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#134481

Deuteranopia (green-blind)

#11407D

Tritanopia (blue-blind)

#2E4756

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #42387f;
/* rgb */ color: rgb(66, 56, 127);
/* oklch */ color: oklch(39.1% 0.116 286.2);

Tailwind

colors: {
  custom: {
    50: '#7b6fa5',
    500: '#42387f',
    950: '#000000',
  },
}

SCSS

$custom: #42387f;
$custom-light: #7b6fa5;
$custom-dark: #000000;

JSON

{
  "hex": "#42387f",
  "rgb": {
    "r": 66,
    "g": 56,
    "b": 127
  },
  "hsl": {
    "h": 248.451,
    "s": 38.798,
    "l": 35.882
  },
  "oklch": {
    "l": 0.39052,
    "c": 0.11553,
    "h": 286.2
  },
  "luminance": 0.05519
}

Semantic roles & 50–950 ramp

primary

#42387F

secondary

#A0A969

accent

#CF59BE

background

#F7F6FA

surface

#EEECF4

border

#C9C7CE

text

#0A070F

muted

#7C7A7F

Preview Lab

Preview with #42387F

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

Preview Lab → · Contrast checker → · Palette generator →