#423FD8#423FD8

#423FD8 is a mid, highly saturated blue. Relative luminance 0.097; OKLCH L 48.0% C 0.225 H 274.7°. Best body text is #FFFFFF at 7.16:1 contrast (WCAG AA passes).

Color values

HEX	#423FD8
RGB	rgb(66, 63, 216)
HSL	hsl(241, 66%, 55%)
HSV	hsv(241, 71%, 85%)
CMYK	cmyk(69.4%, 70.8%, 0%, 15.3%)
CIE-LAB	lab(37.24, 48.95, -77.42)
CIE-LCH	lch(37.24, 91.60, 302.30°)
OKLab	oklab(47.97% 0.0185 -0.2238)
OKLCH	oklch(47.97% 0.225 274.7)
XYZ	xyz(16.4148, 9.6696, 65.9538)
Luminance	0.0967 (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

#423FD8 #D5D83F

analogous

#3F89D8 #423FD8 #8E3FD8

triadic

#423FD8 #D8423F #3FD842

tetradic

#423FD8 #D83F89 #D5D83F #3FD88E

square

#423FD8 #D83F89 #D5D83F #3FD88E

split-complementary

#423FD8 #D88E3F #89D83F

monochromatic

#1C1A82 #2825B5 #423FD8 #7472E2 #A6A5ED

Accessibility & contrast

On white

7.16

#423FD8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#423FD8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423FD8

7.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423FD8	#FFFFFF	#000000	##FFFFFF
##423FD8	1.00	7.16	2.93	7.16
#FFFFFF	7.16	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FDD

Deuteranopia (green-blind)

#0050D5

Tritanopia (blue-blind)

#006A87

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #423fd8;
/* rgb */ color: rgb(66, 63, 216);
/* oklch */ color: oklch(48.0% 0.225 274.7);

Tailwind

colors: {
  custom: {
    50: '#8b76e5',
    500: '#423fd8',
    950: '#000000',
  },
}

SCSS

$custom: #423fd8;
$custom-light: #8b76e5;
$custom-dark: #000000;

JSON

{
  "hex": "#423fd8",
  "rgb": {
    "r": 66,
    "g": 63,
    "b": 216
  },
  "hsl": {
    "h": 241.176,
    "s": 66.234,
    "l": 54.706
  },
  "oklch": {
    "l": 0.4797,
    "c": 0.22458,
    "h": 274.7
  },
  "luminance": 0.09671
}

Semantic roles & 50–950 ramp

primary

#423FD8

secondary

#D8DA99

accent

#E93FE6

background

#F9F7FE

surface

#F2EDFC

border

#CCC8D5

text

#0E0816

muted

#7E7B84

Preview Lab

Preview with #423FD8

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

Preview Lab → · Contrast checker → · Palette generator →