#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
RGB	rgb(66, 59, 199)
HSL	hsl(243, 56%, 51%)
HSV	hsv(243, 70%, 78%)
CMYK	cmyk(66.8%, 70.4%, 0%, 22%)
CIE-LAB	lab(34.82, 45.74, -71.57)
CIE-LCH	lch(34.82, 84.93, 302.58°)
OKLab	oklab(45.75% 0.0236 -0.2067)
OKLCH	oklch(45.75% 0.208 276.5)
XYZ	xyz(14.1162, 8.4085, 54.9008)
Luminance	0.0841 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

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
##423BC7	1.00	7.83	2.68	7.83
#FFFFFF	7.83	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.83	1.00	21.00	1.00

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 →