#423FBF#423FBF

#423FBF is a mid, vivid blue. Relative luminance 0.085; OKLCH L 45.6% C 0.194 H 276.5°. Best body text is #FFFFFF at 7.79:1 contrast (WCAG AA passes).

Color values

HEX	#423FBF
RGB	rgb(66, 63, 191)
HSL	hsl(241, 50%, 50%)
HSV	hsv(241, 67%, 75%)
CMYK	cmyk(65.4%, 67%, 0%, 25.1%)
CIE-LAB	lab(34.95, 40.78, -66.67)
CIE-LCH	lch(34.95, 78.15, 301.45°)
OKLab	oklab(45.63% 0.022 -0.1924)
OKLCH	oklch(45.63% 0.194 276.5)
XYZ	xyz(13.4252, 8.4737, 50.2082)
Luminance	0.0848 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.31

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423FBF #BCBF3F

analogous

#3F7CBF #423FBF #823FBF

triadic

#423FBF #BF423F #3FBF42

tetradic

#423FBF #BF3F7C #BCBF3F #3FBF82

square

#423FBF #BF3F7C #BCBF3F #3FBF82

split-complementary

#423FBF #BF823F #7CBF3F

monochromatic

#222163 #323091 #423FBF #6F6DCF #9C9BDE

Accessibility & contrast

On white

7.79

#423FBF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#423FBF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423FBF

7.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423FBF	#FFFFFF	#000000	##FFFFFF
##423FBF	1.00	7.79	2.70	7.79
#FFFFFF	7.79	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058C3

Deuteranopia (green-blind)

#004DBD

Tritanopia (blue-blind)

#00617A

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #423fbf;
/* rgb */ color: rgb(66, 63, 191);
/* oklch */ color: oklch(45.6% 0.194 276.5);

Tailwind

colors: {
  custom: {
    50: '#8675d3',
    500: '#423fbf',
    950: '#000000',
  },
}

SCSS

$custom: #423fbf;
$custom-light: #8675d3;
$custom-dark: #000000;

JSON

{
  "hex": "#423fbf",
  "rgb": {
    "r": 66,
    "g": 63,
    "b": 191
  },
  "hsl": {
    "h": 241.406,
    "s": 50.394,
    "l": 49.804
  },
  "oklch": {
    "l": 0.45625,
    "c": 0.19362,
    "h": 276.5
  },
  "luminance": 0.08475
}

Semantic roles & 50–950 ramp

primary

#423FBF

secondary

#C9CA90

accent

#DA4ED7

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #423FBF

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

Preview Lab → · Contrast checker → · Palette generator →