#423DD1#423DD1

#423DD1 is a mid, highly saturated blue. Relative luminance 0.091; OKLCH L 47.0% C 0.218 H 275.5°. Best body text is #FFFFFF at 7.45:1 contrast (WCAG AA passes).

Color values

HEX	#423DD1
RGB	rgb(66, 61, 209)
HSL	hsl(242, 62%, 53%)
HSV	hsv(242, 71%, 82%)
CMYK	cmyk(68.4%, 70.8%, 0%, 18%)
CIE-LAB	lab(36.17, 47.82, -75.15)
CIE-LCH	lch(36.17, 89.08, 302.47°)
OKLab	oklab(47% 0.0208 -0.2172)
OKLCH	oklch(47% 0.218 275.5)
XYZ	xyz(15.4203, 9.0978, 61.2526)
Luminance	0.0910 (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

#423DD1 #CCD13D

analogous

#3D82D1 #423DD1 #8C3DD1

triadic

#423DD1 #D1423D #3DD142

tetradic

#423DD1 #D13D82 #CCD13D #3DD18C

square

#423DD1 #D13D82 #CCD13D #3DD18C

split-complementary

#423DD1 #D18C3D #82D13D

monochromatic

#1F1C77 #2C28A9 #423DD1 #726EDD #A2A0E8

Accessibility & contrast

On white

7.45

#423DD1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#423DD1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423DD1

7.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423DD1	#FFFFFF	#000000	##FFFFFF
##423DD1	1.00	7.45	2.82	7.45
#FFFFFF	7.45	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CD5

Deuteranopia (green-blind)

#004ECE

Tritanopia (blue-blind)

#006683

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #423dd1;
/* rgb */ color: rgb(66, 61, 209);
/* oklch */ color: oklch(47.0% 0.218 275.5);

Tailwind

colors: {
  custom: {
    50: '#8974e0',
    500: '#423dd1',
    950: '#000000',
  },
}

SCSS

$custom: #423dd1;
$custom-light: #8974e0;
$custom-dark: #000000;

JSON

{
  "hex": "#423dd1",
  "rgb": {
    "r": 66,
    "g": 61,
    "b": 209
  },
  "hsl": {
    "h": 242.027,
    "s": 61.667,
    "l": 52.941
  },
  "oklch": {
    "l": 0.47004,
    "c": 0.21817,
    "h": 275.5
  },
  "luminance": 0.09099
}

Semantic roles & 50–950 ramp

primary

#423DD1

secondary

#D3D595

accent

#E543DF

background

#F9F7FD

surface

#F2EDFB

border

#CCC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #423DD1

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

Preview Lab → · Contrast checker → · Palette generator →