#423D63#423D63

#423D63 is a dark, moderate blue. Relative luminance 0.054; OKLCH L 38.3% C 0.064 H 289.0°. Best body text is #FFFFFF at 10.10:1 contrast (WCAG AA passes).

Color values

HEX	#423D63
RGB	rgb(66, 61, 99)
HSL	hsl(248, 24%, 31%)
HSV	hsv(248, 38%, 39%)
CMYK	cmyk(33.3%, 38.4%, 0%, 61.2%)
CIE-LAB	lab(27.84, 11.97, -21.67)
CIE-LCH	lch(27.84, 24.76, 298.91°)
OKLab	oklab(38.25% 0.0209 -0.0605)
OKLCH	oklch(38.25% 0.064 289)
XYZ	xyz(6.1671, 5.3965, 12.5187)
Luminance	0.0540 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423D63 #5E633D

analogous

#3D4B63 #423D63 #553D63

triadic

#423D63 #63423D #3D6342

tetradic

#423D63 #633D4B #5E633D #3D6355

square

#423D63 #633D4B #5E633D #3D6355

split-complementary

#423D63 #63553D #4B633D

monochromatic

#100E17 #29263D #423D63 #5B5489 #7972A8

Accessibility & contrast

On white

10.10

#423D63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#423D63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423D63

10.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423D63	#FFFFFF	#000000	##FFFFFF
##423D63	1.00	10.10	2.08	10.10
#FFFFFF	10.10	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#324365

Deuteranopia (green-blind)

#324162

Tritanopia (blue-blind)

#3A444B

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #423d63;
/* rgb */ color: rgb(66, 61, 99);
/* oklch */ color: oklch(38.3% 0.064 289.0);

Tailwind

colors: {
  custom: {
    50: '#77728f',
    500: '#423d63',
    950: '#000000',
  },
}

SCSS

$custom: #423d63;
$custom-light: #77728f;
$custom-dark: #000000;

JSON

{
  "hex": "#423d63",
  "rgb": {
    "r": 66,
    "g": 61,
    "b": 99
  },
  "hsl": {
    "h": 247.895,
    "s": 23.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.38254,
    "c": 0.06398,
    "h": 289
  },
  "luminance": 0.05397
}

Semantic roles & 50–950 ramp

primary

#423D63

secondary

#8D9369

accent

#C068B5

background

#F7F6F8

surface

#EDECF0

border

#C8C7CB

text

#09080C

muted

#7B7B7D

Preview Lab

Preview with #423D63

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

Preview Lab → · Contrast checker → · Palette generator →