#423FC7#423FC7

#423FC7 is a mid, highly saturated blue. Relative luminance 0.088; OKLCH L 46.4% C 0.204 H 275.9°. Best body text is #FFFFFF at 7.59:1 contrast (WCAG AA passes).

Color values

HEX	#423FC7
RGB	rgb(66, 63, 199)
HSL	hsl(241, 55%, 51%)
HSV	hsv(241, 68%, 78%)
CMYK	cmyk(66.8%, 68.3%, 0%, 22%)
CIE-LAB	lab(35.67, 43.42, -70.18)
CIE-LCH	lch(35.67, 82.52, 301.75°)
OKLab	oklab(46.36% 0.021 -0.2026)
OKLCH	oklch(46.36% 0.204 275.9)
XYZ	xyz(14.3297, 8.8355, 54.9720)
Luminance	0.0884 (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

#423FC7 #C4C73F

analogous

#3F80C7 #423FC7 #863FC7

triadic

#423FC7 #C7423F #3FC742

tetradic

#423FC7 #C73F80 #C4C73F #3FC786

square

#423FC7 #C73F80 #C4C73F #3FC786

split-complementary

#423FC7 #C7863F #80C73F

monochromatic

#21206C #302D9B #423FC7 #716ED5 #9F9EE3

Accessibility & contrast

On white

7.59

#423FC7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.77

#423FC7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423FC7

7.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423FC7	#FFFFFF	#000000	##FFFFFF
##423FC7	1.00	7.59	2.77	7.59
#FFFFFF	7.59	1.00	21.00	1.00
#000000	2.77	21.00	1.00	21.00
##FFFFFF	7.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ACB

Deuteranopia (green-blind)

#004EC4

Tritanopia (blue-blind)

#00647E

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #423fc7;
/* rgb */ color: rgb(66, 63, 199);
/* oklch */ color: oklch(46.4% 0.204 275.9);

Tailwind

colors: {
  custom: {
    50: '#8775d9',
    500: '#423fc7',
    950: '#000000',
  },
}

SCSS

$custom: #423fc7;
$custom-light: #8775d9;
$custom-dark: #000000;

JSON

{
  "hex": "#423fc7",
  "rgb": {
    "r": 66,
    "g": 63,
    "b": 199
  },
  "hsl": {
    "h": 241.324,
    "s": 54.839,
    "l": 51.373
  },
  "oklch": {
    "l": 0.4636,
    "c": 0.20372,
    "h": 275.9
  },
  "luminance": 0.08837
}

Semantic roles & 50–950 ramp

primary

#423FC7

secondary

#CECF93

accent

#DE4ADB

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #423FC7

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

Preview Lab → · Contrast checker → · Palette generator →