#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
RGBrgb(66, 61, 99)
HSLhsl(248, 24%, 31%)
HSVhsv(248, 38%, 39%)
CMYKcmyk(33.3%, 38.4%, 0%, 61.2%)
CIE-LABlab(27.84, 11.97, -21.67)
CIE-LCHlch(27.84, 24.76, 298.91°)
OKLaboklab(38.25% 0.0209 -0.0605)
OKLCHoklch(38.25% 0.064 289)
XYZxyz(6.1671, 5.3965, 12.5187)
Luminance0.0540 (WCAG relative)
Temperaturecool
Familyblue

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
##423D631.0010.102.0810.10
#FFFFFF10.101.0021.001.00
#0000002.0821.001.0021.00
##FFFFFF10.101.0021.001.00

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 →

#423D63 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva