#423BC8#423BC8

#423BC8 is a mid, highly saturated blue. Relative luminance 0.085; OKLCH L 45.8% C 0.209 H 276.4°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#423BC8
RGB	rgb(66, 59, 200)
HSL	hsl(243, 56%, 51%)
HSV	hsv(243, 71%, 78%)
CMYK	cmyk(67%, 70.5%, 0%, 21.6%)
CIE-LAB	lab(34.91, 46.06, -71.99)
CIE-LCH	lch(34.91, 85.47, 302.61°)
OKLab	oklab(45.85% 0.0235 -0.208)
OKLCH	oklch(45.85% 0.209 276.4)
XYZ	xyz(14.2327, 8.4551, 55.5143)
Luminance	0.0846 (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

#423BC8 #C1C83B

analogous

#3B7AC8 #423BC8 #883BC8

triadic

#423BC8 #C8423B #3BC842

tetradic

#423BC8 #C83B7A #C1C83B #3BC888

square

#423BC8 #C83B7A #C1C83B #3BC888

split-complementary

#423BC8 #C8883B #7AC83B

monochromatic

#221E6B #312B9A #423BC8 #706BD5 #9E9BE3

Accessibility & contrast

On white

7.80

#423BC8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#423BC8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423BC8

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423BC8	#FFFFFF	#000000	##FFFFFF
##423BC8	1.00	7.80	2.69	7.80
#FFFFFF	7.80	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058CC

Deuteranopia (green-blind)

#004CC5

Tritanopia (blue-blind)

#00627D

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #423bc8;
/* rgb */ color: rgb(66, 59, 200);
/* oklch */ color: oklch(45.8% 0.209 276.4);

Tailwind

colors: {
  custom: {
    50: '#8872da',
    500: '#423bc8',
    950: '#000000',
  },
}

SCSS

$custom: #423bc8;
$custom-light: #8872da;
$custom-dark: #000000;

JSON

{
  "hex": "#423bc8",
  "rgb": {
    "r": 66,
    "g": 59,
    "b": 200
  },
  "hsl": {
    "h": 242.979,
    "s": 56.175,
    "l": 50.784
  },
  "oklch": {
    "l": 0.45847,
    "c": 0.20928,
    "h": 276.4
  },
  "luminance": 0.08456
}

Semantic roles & 50–950 ramp

primary

#423BC8

secondary

#CCCF90

accent

#DF48D8

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #423BC8

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

Preview Lab → · Contrast checker → · Palette generator →