#423BCB#423BCB

#423BCB is a mid, highly saturated blue. Relative luminance 0.086; OKLCH L 46.1% C 0.213 H 276.2°. Best body text is #FFFFFF at 7.72:1 contrast (WCAG AA passes).

Color values

HEX	#423BCB
RGB	rgb(66, 59, 203)
HSL	hsl(243, 58%, 51%)
HSV	hsv(243, 71%, 80%)
CMYK	cmyk(67.5%, 70.9%, 0%, 20.4%)
CIE-LAB	lab(35.20, 47.02, -73.28)
CIE-LCH	lch(35.20, 87.07, 302.69°)
OKLab	oklab(46.14% 0.023 -0.2117)
OKLCH	oklch(46.14% 0.213 276.2)
XYZ	xyz(14.5867, 8.5967, 57.3789)
Luminance	0.0860 (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

#423BCB #C4CB3B

analogous

#3B7CCB #423BCB #8A3BCB

triadic

#423BCB #CB423B #3BCB42

tetradic

#423BCB #CB3B7C #C4CB3B #3BCB8A

square

#423BCB #CB3B7C #C4CB3B #3BCB8A

split-complementary

#423BCB #CB8A3B #7CCB3B

monochromatic

#211D6E #302A9F #423BCB #716BD8 #9F9CE5

Accessibility & contrast

On white

7.72

#423BCB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#423BCB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423BCB

7.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423BCB	#FFFFFF	#000000	##FFFFFF
##423BCB	1.00	7.72	2.72	7.72
#FFFFFF	7.72	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059CF

Deuteranopia (green-blind)

#004CC8

Tritanopia (blue-blind)

#00637F

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #423bcb;
/* rgb */ color: rgb(66, 59, 203);
/* oklch */ color: oklch(46.1% 0.213 276.2);

Tailwind

colors: {
  custom: {
    50: '#8873dc',
    500: '#423bcb',
    950: '#000000',
  },
}

SCSS

$custom: #423bcb;
$custom-light: #8873dc;
$custom-dark: #000000;

JSON

{
  "hex": "#423bcb",
  "rgb": {
    "r": 66,
    "g": 59,
    "b": 203
  },
  "hsl": {
    "h": 242.917,
    "s": 58.065,
    "l": 51.373
  },
  "oklch": {
    "l": 0.46135,
    "c": 0.21294,
    "h": 276.2
  },
  "luminance": 0.08598
}

Semantic roles & 50–950 ramp

primary

#423BCB

secondary

#CED191

accent

#E147DA

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #423BCB

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

Preview Lab → · Contrast checker → · Palette generator →