#423FD5#423FD5

#423FD5 is a mid, highly saturated blue. Relative luminance 0.095; OKLCH L 47.7% C 0.221 H 274.9°. Best body text is #FFFFFF at 7.23:1 contrast (WCAG AA passes).

Color values

HEX#423FD5
RGBrgb(66, 63, 213)
HSLhsl(241, 64%, 54%)
HSVhsv(241, 70%, 84%)
CMYKcmyk(69%, 70.4%, 0%, 16.5%)
CIE-LABlab(36.96, 47.98, -76.16)
CIE-LCHlch(36.96, 90.02, 302.21°)
OKLaboklab(47.68% 0.0189 -0.2201)
OKLCHoklch(47.68% 0.221 274.9)
XYZxyz(16.0305, 9.5159, 63.9298)
Luminance0.0952 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#423FD5 #D2D53F
analogous
#3F87D5 #423FD5 #8D3FD5
triadic
#423FD5 #D5423F #3FD542
tetradic
#423FD5 #D53F87 #D2D53F #3FD58D
square
#423FD5 #D53F87 #D2D53F #3FD58D
split-complementary
#423FD5 #D58D3F #87D53F
monochromatic
#1E1C7E #2927B0 #423FD5 #7371E0 #A5A3EB

Accessibility & contrast

On white

7.23
#423FD5 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.90
#423FD5 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423FD5
7.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##423FD5#FFFFFF#000000##FFFFFF
##423FD51.007.232.907.23
#FFFFFF7.231.0021.001.00
#0000002.9021.001.0021.00
##FFFFFF7.231.0021.001.00

Color blindness preview

Protanopia (red-blind)
#005ED9
Deuteranopia (green-blind)
#0050D2
Tritanopia (blue-blind)
#006986
Achromatopsia (no color)
#575757

Design tokens & code

CSS
--color: #423fd5;
/* rgb */ color: rgb(66, 63, 213);
/* oklch */ color: oklch(47.7% 0.221 274.9);
Tailwind
colors: {
  custom: {
    50: '#8a75e3',
    500: '#423fd5',
    950: '#000000',
  },
}
SCSS
$custom: #423fd5;
$custom-light: #8a75e3;
$custom-dark: #000000;
JSON
{
  "hex": "#423fd5",
  "rgb": {
    "r": 66,
    "g": 63,
    "b": 213
  },
  "hsl": {
    "h": 241.2,
    "s": 64.103,
    "l": 54.118
  },
  "oklch": {
    "l": 0.47682,
    "c": 0.22095,
    "h": 274.9
  },
  "luminance": 0.09517
}

Semantic roles & 50–950 ramp

primary
#423FD5
secondary
#D7D898
accent
#E741E4
background
#F9F7FE
surface
#F2EDFC
border
#CCC8D5
text
#0D0816
muted
#7E7B84

Preview Lab

Preview with #423FD5

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

Preview Lab → · Contrast checker → · Palette generator →

#423FD5 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva