#423FC9#423FC9

#423FC9 is a mid, highly saturated blue. Relative luminance 0.089; OKLCH L 46.5% C 0.206 H 275.8°. Best body text is #FFFFFF at 7.54:1 contrast (WCAG AA passes).

Color values

HEX	#423FC9
RGB	rgb(66, 63, 201)
HSL	hsl(241, 56%, 52%)
HSV	hsv(241, 69%, 79%)
CMYK	cmyk(67.2%, 68.7%, 0%, 21.2%)
CIE-LAB	lab(35.85, 44.07, -71.04)
CIE-LCH	lch(35.85, 83.60, 301.82°)
OKLab	oklab(46.55% 0.0207 -0.2052)
OKLCH	oklch(46.55% 0.206 275.8)
XYZ	xyz(14.5634, 8.9290, 56.2030)
Luminance	0.0893 (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

#423FC9 #C6C93F

analogous

#3F81C9 #423FC9 #873FC9

triadic

#423FC9 #C9423F #3FC942

tetradic

#423FC9 #C93F81 #C6C93F #3FC987

square

#423FC9 #C93F81 #C6C93F #3FC987

split-complementary

#423FC9 #C9873F #81C93F

monochromatic

#211F6F #2F2D9E #423FC9 #716FD6 #A09FE4

Accessibility & contrast

On white

7.54

#423FC9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#423FC9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423FC9

7.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423FC9	#FFFFFF	#000000	##FFFFFF
##423FC9	1.00	7.54	2.79	7.54
#FFFFFF	7.54	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ACD

Deuteranopia (green-blind)

#004EC6

Tritanopia (blue-blind)

#00647F

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #423fc9;
/* rgb */ color: rgb(66, 63, 201);
/* oklch */ color: oklch(46.5% 0.206 275.8);

Tailwind

colors: {
  custom: {
    50: '#8875db',
    500: '#423fc9',
    950: '#000000',
  },
}

SCSS

$custom: #423fc9;
$custom-light: #8875db;
$custom-dark: #000000;

JSON

{
  "hex": "#423fc9",
  "rgb": {
    "r": 66,
    "g": 63,
    "b": 201
  },
  "hsl": {
    "h": 241.304,
    "s": 56.098,
    "l": 51.765
  },
  "oklch": {
    "l": 0.46546,
    "c": 0.20622,
    "h": 275.8
  },
  "luminance": 0.0893
}

Semantic roles & 50–950 ramp

primary

#423FC9

secondary

#CFD094

accent

#DF48DC

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #423FC9

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

Preview Lab → · Contrast checker → · Palette generator →