#42368B#42368B

#42368B is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.6% C 0.136 H 284.8°. Best body text is #FFFFFF at 9.85:1 contrast (WCAG AA passes).

Color values

HEX	#42368B
RGB	rgb(66, 54, 139)
HSL	hsl(248, 44%, 38%)
HSV	hsv(248, 61%, 55%)
CMYK	cmyk(52.5%, 61.2%, 0%, 45.5%)
CIE-LAB	lab(28.54, 29.18, -45.81)
CIE-LCH	lch(28.54, 54.31, 302.50°)
OKLab	oklab(39.61% 0.0346 -0.1312)
OKLCH	oklch(39.61% 0.136 284.8)
XYZ	xyz(8.2247, 5.6602, 25.0802)
Luminance	0.0566 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42368B #7F8B36

analogous

#36548B #42368B #6D368B

triadic

#42368B #8B4236 #368B42

tetradic

#42368B #8B3654 #7F8B36 #368B6D

square

#42368B #8B3654 #7F8B36 #368B6D

split-complementary

#42368B #8B6D36 #548B36

monochromatic

#181433 #2D255F #42368B #5747B7 #7F73C9

Accessibility & contrast

On white

9.85

#42368B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#42368B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42368B

9.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42368B	#FFFFFF	#000000	##FFFFFF
##42368B	1.00	9.85	2.13	9.85
#FFFFFF	9.85	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00468E

Deuteranopia (green-blind)

#004189

Tritanopia (blue-blind)

#264A5B

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #42368b;
/* rgb */ color: rgb(66, 54, 139);
/* oklch */ color: oklch(39.6% 0.136 284.8);

Tailwind

colors: {
  custom: {
    50: '#7d6dae',
    500: '#42368b',
    950: '#000000',
  },
}

SCSS

$custom: #42368b;
$custom-light: #7d6dae;
$custom-dark: #000000;

JSON

{
  "hex": "#42368b",
  "rgb": {
    "r": 66,
    "g": 54,
    "b": 139
  },
  "hsl": {
    "h": 248.471,
    "s": 44.041,
    "l": 37.843
  },
  "oklch": {
    "l": 0.39608,
    "c": 0.13566,
    "h": 284.8
  },
  "luminance": 0.05661
}

Semantic roles & 50–950 ramp

primary

#42368B

secondary

#A7B16C

accent

#D454C2

background

#F7F6FA

surface

#EEEBF4

border

#C9C6CE

text

#0A0710

muted

#7C7A7F

Preview Lab

Preview with #42368B

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

Preview Lab → · Contrast checker → · Palette generator →