#42387D#42387D

#42387D is a dark, moderate blue. Relative luminance 0.055; OKLCH L 38.9% C 0.113 H 286.6°. Best body text is #FFFFFF at 10.03:1 contrast (WCAG AA passes).

Color values

HEX	#42387D
RGB	rgb(66, 56, 125)
HSL	hsl(249, 38%, 35%)
HSV	hsv(249, 55%, 49%)
CMYK	cmyk(47.2%, 55.2%, 0%, 51%)
CIE-LAB	lab(28.03, 23.36, -37.91)
CIE-LCH	lch(28.03, 44.53, 301.65°)
OKLab	oklab(38.91% 0.0321 -0.1079)
OKLCH	oklch(38.91% 0.113 286.6)
XYZ	xyz(7.3615, 5.4670, 20.0654)
Luminance	0.0547 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42387D #737D38

analogous

#38507D #42387D #64387D

triadic

#42387D #7D4238 #387D42

tetradic

#42387D #7D3850 #737D38 #387D64

square

#42387D #7D3850 #737D38 #387D64

split-complementary

#42387D #7D6438 #507D38

monochromatic

#151228 #2C2553 #42387D #584BA7 #7C70BF

Accessibility & contrast

On white

10.03

#42387D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#42387D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42387D

10.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42387D	#FFFFFF	#000000	##FFFFFF
##42387D	1.00	10.03	2.09	10.03
#FFFFFF	10.03	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16447F

Deuteranopia (green-blind)

#15407B

Tritanopia (blue-blind)

#2F4755

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #42387d;
/* rgb */ color: rgb(66, 56, 125);
/* oklch */ color: oklch(38.9% 0.113 286.6);

Tailwind

colors: {
  custom: {
    50: '#7b6fa3',
    500: '#42387d',
    950: '#000000',
  },
}

SCSS

$custom: #42387d;
$custom-light: #7b6fa3;
$custom-dark: #000000;

JSON

{
  "hex": "#42387d",
  "rgb": {
    "r": 66,
    "g": 56,
    "b": 125
  },
  "hsl": {
    "h": 248.696,
    "s": 38.122,
    "l": 35.49
  },
  "oklch": {
    "l": 0.38905,
    "c": 0.11259,
    "h": 286.6
  },
  "luminance": 0.05467
}

Semantic roles & 50–950 ramp

primary

#42387D

secondary

#9FA869

accent

#CE5ABD

background

#F7F6FA

surface

#EEECF4

border

#C9C7CE

text

#0A070F

muted

#7C7A7F

Preview Lab

Preview with #42387D

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

Preview Lab → · Contrast checker → · Palette generator →