#423BC5#423BC5

#423BC5 is a mid, highly saturated blue. Relative luminance 0.083; OKLCH L 45.6% C 0.206 H 276.7°. Best body text is #FFFFFF at 7.88:1 contrast (WCAG AA passes).

Color values

HEX	#423BC5
RGB	rgb(66, 59, 197)
HSL	hsl(243, 54%, 50%)
HSV	hsv(243, 70%, 77%)
CMYK	cmyk(66.5%, 70.1%, 0%, 22.7%)
CIE-LAB	lab(34.63, 45.09, -70.70)
CIE-LCH	lch(34.63, 83.86, 302.53°)
OKLab	oklab(45.56% 0.0239 -0.2042)
OKLCH	oklch(45.56% 0.206 276.7)
XYZ	xyz(13.8855, 8.3162, 53.6859)
Luminance	0.0832 (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

#423BC5 #BEC53B

analogous

#3B79C5 #423BC5 #873BC5

triadic

#423BC5 #C5423B #3BC542

tetradic

#423BC5 #C53B79 #BEC53B #3BC587

square

#423BC5 #C53B79 #BEC53B #3BC587

split-complementary

#423BC5 #C5873B #79C53B

monochromatic

#221F67 #322C96 #423BC5 #706AD3 #9D99E1

Accessibility & contrast

On white

7.88

#423BC5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#423BC5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423BC5

7.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423BC5	#FFFFFF	#000000	##FFFFFF
##423BC5	1.00	7.88	2.66	7.88
#FFFFFF	7.88	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057C9

Deuteranopia (green-blind)

#004BC2

Tritanopia (blue-blind)

#00617C

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #423bc5;
/* rgb */ color: rgb(66, 59, 197);
/* oklch */ color: oklch(45.6% 0.206 276.7);

Tailwind

colors: {
  custom: {
    50: '#8772d8',
    500: '#423bc5',
    950: '#000000',
  },
}

SCSS

$custom: #423bc5;
$custom-light: #8772d8;
$custom-dark: #000000;

JSON

{
  "hex": "#423bc5",
  "rgb": {
    "r": 66,
    "g": 59,
    "b": 197
  },
  "hsl": {
    "h": 243.043,
    "s": 54.331,
    "l": 50.196
  },
  "oklch": {
    "l": 0.45562,
    "c": 0.20558,
    "h": 276.7
  },
  "luminance": 0.08317
}

Semantic roles & 50–950 ramp

primary

#423BC5

secondary

#CACD8F

accent

#DE4AD6

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #423BC5

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

Preview Lab → · Contrast checker → · Palette generator →