#423AC7#423AC7

#423AC7 is a mid, highly saturated blue. Relative luminance 0.083; OKLCH L 45.6% C 0.209 H 276.7°. Best body text is #FFFFFF at 7.89:1 contrast (WCAG AA passes).

Color values

HEX	#423AC7
RGB	rgb(66, 58, 199)
HSL	hsl(243, 56%, 50%)
HSV	hsv(243, 71%, 78%)
CMYK	cmyk(66.8%, 70.9%, 0%, 22%)
CIE-LAB	lab(34.61, 46.31, -71.90)
CIE-LCH	lch(34.61, 85.52, 302.78°)
OKLab	oklab(45.61% 0.0243 -0.2077)
OKLCH	oklch(45.61% 0.209 276.7)
XYZ	xyz(14.0653, 8.3067, 54.8839)
Luminance	0.0831 (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

#423AC7 #BFC73A

analogous

#3A79C7 #423AC7 #883AC7

triadic

#423AC7 #C7423A #3AC742

tetradic

#423AC7 #C73A79 #BFC73A #3AC788

square

#423AC7 #C73A79 #BFC73A #3AC788

split-complementary

#423AC7 #C7883A #79C73A

monochromatic

#221E69 #322B98 #423AC7 #706AD5 #9D99E2

Accessibility & contrast

On white

7.89

#423AC7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#423AC7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423AC7

7.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423AC7	#FFFFFF	#000000	##FFFFFF
##423AC7	1.00	7.89	2.66	7.89
#FFFFFF	7.89	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057CB

Deuteranopia (green-blind)

#004BC4

Tritanopia (blue-blind)

#00617C

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #423ac7;
/* rgb */ color: rgb(66, 58, 199);
/* oklch */ color: oklch(45.6% 0.209 276.7);

Tailwind

colors: {
  custom: {
    50: '#8872d9',
    500: '#423ac7',
    950: '#000000',
  },
}

SCSS

$custom: #423ac7;
$custom-light: #8872d9;
$custom-dark: #000000;

JSON

{
  "hex": "#423ac7",
  "rgb": {
    "r": 66,
    "g": 58,
    "b": 199
  },
  "hsl": {
    "h": 243.404,
    "s": 55.731,
    "l": 50.392
  },
  "oklch": {
    "l": 0.45605,
    "c": 0.2091,
    "h": 276.7
  },
  "luminance": 0.08308
}

Semantic roles & 50–950 ramp

primary

#423AC7

secondary

#CACE8F

accent

#DF49D7

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #423AC7

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

Preview Lab → · Contrast checker → · Palette generator →