#423BD9#423BD9

#423BD9 is a mid, highly saturated blue. Relative luminance 0.093; OKLCH L 47.5% C 0.230 H 275.1°. Best body text is #FFFFFF at 7.34:1 contrast (WCAG AA passes).

Color values

HEX	#423BD9
RGB	rgb(66, 59, 217)
HSL	hsl(243, 68%, 54%)
HSV	hsv(243, 73%, 85%)
CMYK	cmyk(69.6%, 72.8%, 0%, 14.9%)
CIE-LAB	lab(36.55, 51.48, -79.15)
CIE-LCH	lch(36.55, 94.42, 303.04°)
OKLab	oklab(47.5% 0.0205 -0.2288)
OKLCH	oklch(47.5% 0.23 275.1)
XYZ	xyz(16.3310, 9.2944, 66.5655)
Luminance	0.0930 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 2.68

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423BD9 #D2D93B

analogous

#3B83D9 #423BD9 #913BD9

triadic

#423BD9 #D9423B #3BD942

tetradic

#423BD9 #D93B83 #D2D93B #3BD991

square

#423BD9 #D93B83 #D2D93B #3BD991

split-complementary

#423BD9 #D9913B #83D93B

monochromatic

#1E1981 #2923B4 #423BD9 #736EE3 #A5A2ED

Accessibility & contrast

On white

7.34

#423BD9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#423BD9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423BD9

7.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423BD9	#FFFFFF	#000000	##FFFFFF
##423BD9	1.00	7.34	2.86	7.34
#FFFFFF	7.34	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DDE

Deuteranopia (green-blind)

#004FD6

Tritanopia (blue-blind)

#006887

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #423bd9;
/* rgb */ color: rgb(66, 59, 217);
/* oklch */ color: oklch(47.5% 0.230 275.1);

Tailwind

colors: {
  custom: {
    50: '#8b73e6',
    500: '#423bd9',
    950: '#000000',
  },
}

SCSS

$custom: #423bd9;
$custom-light: #8b73e6;
$custom-dark: #000000;

JSON

{
  "hex": "#423bd9",
  "rgb": {
    "r": 66,
    "g": 59,
    "b": 217
  },
  "hsl": {
    "h": 242.658,
    "s": 67.521,
    "l": 54.118
  },
  "oklch": {
    "l": 0.47502,
    "c": 0.22975,
    "h": 275.1
  },
  "luminance": 0.09296
}

Semantic roles & 50–950 ramp

primary

#423BD9

secondary

#D7DA96

accent

#EA3DE3

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0E0816

muted

#7E7B84

Preview Lab

Preview with #423BD9

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

Preview Lab → · Contrast checker → · Palette generator →