#423BC7#423BC7

#423BC7 is a mid, highly saturated blue. Relative luminance 0.084; OKLCH L 45.8% C 0.208 H 276.5°. Best body text is #FFFFFF at 7.83:1 contrast (WCAG AA passes).

Color values

HEX#423BC7
RGBrgb(66, 59, 199)
HSLhsl(243, 56%, 51%)
HSVhsv(243, 70%, 78%)
CMYKcmyk(66.8%, 70.4%, 0%, 22%)
CIE-LABlab(34.82, 45.74, -71.57)
CIE-LCHlch(34.82, 84.93, 302.58°)
OKLaboklab(45.75% 0.0236 -0.2067)
OKLCHoklch(45.75% 0.208 276.5)
XYZxyz(14.1162, 8.4085, 54.9008)
Luminance0.0841 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#423BC7 #C0C73B
analogous
#3B7AC7 #423BC7 #883BC7
triadic
#423BC7 #C7423B #3BC742
tetradic
#423BC7 #C73B7A #C0C73B #3BC788
square
#423BC7 #C73B7A #C0C73B #3BC788
split-complementary
#423BC7 #C7883B #7AC73B
monochromatic
#221E69 #312C99 #423BC7 #706BD5 #9E9AE2

Accessibility & contrast

On white

7.83
#423BC7 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.68
#423BC7 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423BC7
7.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##423BC7#FFFFFF#000000##FFFFFF
##423BC71.007.832.687.83
#FFFFFF7.831.0021.001.00
#0000002.6821.001.0021.00
##FFFFFF7.831.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0058CB
Deuteranopia (green-blind)
#004CC4
Tritanopia (blue-blind)
#00617D
Achromatopsia (no color)
#525252

Design tokens & code

CSS
--color: #423bc7;
/* rgb */ color: rgb(66, 59, 199);
/* oklch */ color: oklch(45.8% 0.208 276.5);
Tailwind
colors: {
  custom: {
    50: '#8772d9',
    500: '#423bc7',
    950: '#000000',
  },
}
SCSS
$custom: #423bc7;
$custom-light: #8772d9;
$custom-dark: #000000;
JSON
{
  "hex": "#423bc7",
  "rgb": {
    "r": 66,
    "g": 59,
    "b": 199
  },
  "hsl": {
    "h": 243,
    "s": 55.556,
    "l": 50.588
  },
  "oklch": {
    "l": 0.45752,
    "c": 0.20804,
    "h": 276.5
  },
  "luminance": 0.0841
}

Semantic roles & 50–950 ramp

primary
#423BC7
secondary
#CBCE90
accent
#DF49D7
background
#F9F7FD
surface
#F1EDFB
border
#CBC8D4
text
#0D0815
muted
#7E7B83

Preview Lab

Preview with #423BC7

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

Preview Lab → · Contrast checker → · Palette generator →

#423BC7 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva