#423FBE#423FBE

#423FBE is a mid, vivid blue. Relative luminance 0.084; OKLCH L 45.5% C 0.192 H 276.6°. Best body text is #FFFFFF at 7.82:1 contrast (WCAG AA passes).

Color values

HEX	#423FBE
RGB	rgb(66, 63, 190)
HSL	hsl(241, 50%, 50%)
HSV	hsv(241, 67%, 75%)
CMYK	cmyk(65.3%, 66.8%, 0%, 25.5%)
CIE-LAB	lab(34.86, 40.45, -66.23)
CIE-LCH	lch(34.86, 77.60, 301.42°)
OKLab	oklab(45.53% 0.0221 -0.1911)
OKLCH	oklch(45.53% 0.192 276.6)
XYZ	xyz(13.3155, 8.4298, 49.6306)
Luminance	0.0843 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.25

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423FBE #BBBE3F

analogous

#3F7CBE #423FBE #813FBE

triadic

#423FBE #BE423F #3FBE42

tetradic

#423FBE #BE3F7C #BBBE3F #3FBE81

square

#423FBE #BE3F7C #BBBE3F #3FBE81

split-complementary

#423FBE #BE813F #7CBE3F

monochromatic

#222162 #323090 #423FBE #6E6CCE #9C9ADD

Accessibility & contrast

On white

7.82

#423FBE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#423FBE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423FBE

7.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423FBE	#FFFFFF	#000000	##FFFFFF
##423FBE	1.00	7.82	2.69	7.82
#FFFFFF	7.82	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057C2

Deuteranopia (green-blind)

#004CBC

Tritanopia (blue-blind)

#006079

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #423fbe;
/* rgb */ color: rgb(66, 63, 190);
/* oklch */ color: oklch(45.5% 0.192 276.6);

Tailwind

colors: {
  custom: {
    50: '#8575d3',
    500: '#423fbe',
    950: '#000000',
  },
}

SCSS

$custom: #423fbe;
$custom-light: #8575d3;
$custom-dark: #000000;

JSON

{
  "hex": "#423fbe",
  "rgb": {
    "r": 66,
    "g": 63,
    "b": 190
  },
  "hsl": {
    "h": 241.417,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.45534,
    "c": 0.19235,
    "h": 276.6
  },
  "luminance": 0.08431
}

Semantic roles & 50–950 ramp

primary

#423FBE

secondary

#C8C98F

accent

#DA4ED6

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #423FBE

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

Preview Lab → · Contrast checker → · Palette generator →