#423FD8#423FD8

#423FD8 is a mid, highly saturated blue. Relative luminance 0.097; OKLCH L 48.0% C 0.225 H 274.7°. Best body text is #FFFFFF at 7.16:1 contrast (WCAG AA passes).

Color values

HEX#423FD8
RGBrgb(66, 63, 216)
HSLhsl(241, 66%, 55%)
HSVhsv(241, 71%, 85%)
CMYKcmyk(69.4%, 70.8%, 0%, 15.3%)
CIE-LABlab(37.24, 48.95, -77.42)
CIE-LCHlch(37.24, 91.60, 302.30°)
OKLaboklab(47.97% 0.0185 -0.2238)
OKLCHoklch(47.97% 0.225 274.7)
XYZxyz(16.4148, 9.6696, 65.9538)
Luminance0.0967 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#423FD8 #D5D83F
analogous
#3F89D8 #423FD8 #8E3FD8
triadic
#423FD8 #D8423F #3FD842
tetradic
#423FD8 #D83F89 #D5D83F #3FD88E
square
#423FD8 #D83F89 #D5D83F #3FD88E
split-complementary
#423FD8 #D88E3F #89D83F
monochromatic
#1C1A82 #2825B5 #423FD8 #7472E2 #A6A5ED

Accessibility & contrast

On white

7.16
#423FD8 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.93
#423FD8 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423FD8
7.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##423FD8#FFFFFF#000000##FFFFFF
##423FD81.007.162.937.16
#FFFFFF7.161.0021.001.00
#0000002.9321.001.0021.00
##FFFFFF7.161.0021.001.00

Color blindness preview

Protanopia (red-blind)
#005FDD
Deuteranopia (green-blind)
#0050D5
Tritanopia (blue-blind)
#006A87
Achromatopsia (no color)
#585858

Design tokens & code

CSS
--color: #423fd8;
/* rgb */ color: rgb(66, 63, 216);
/* oklch */ color: oklch(48.0% 0.225 274.7);
Tailwind
colors: {
  custom: {
    50: '#8b76e5',
    500: '#423fd8',
    950: '#000000',
  },
}
SCSS
$custom: #423fd8;
$custom-light: #8b76e5;
$custom-dark: #000000;
JSON
{
  "hex": "#423fd8",
  "rgb": {
    "r": 66,
    "g": 63,
    "b": 216
  },
  "hsl": {
    "h": 241.176,
    "s": 66.234,
    "l": 54.706
  },
  "oklch": {
    "l": 0.4797,
    "c": 0.22458,
    "h": 274.7
  },
  "luminance": 0.09671
}

Semantic roles & 50–950 ramp

primary
#423FD8
secondary
#D8DA99
accent
#E93FE6
background
#F9F7FE
surface
#F2EDFC
border
#CCC8D5
text
#0E0816
muted
#7E7B84

Preview Lab

Preview with #423FD8

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

Preview Lab → · Contrast checker → · Palette generator →

#423FD8 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva