#423FBA#423FBA

#423FBA is a mid, vivid blue. Relative luminance 0.083; OKLCH L 45.2% C 0.187 H 276.9°. Best body text is #FFFFFF at 7.92:1 contrast (WCAG AA passes).

Color values

HEX	#423FBA
RGB	rgb(66, 63, 186)
HSL	hsl(241, 49%, 49%)
HSV	hsv(241, 66%, 73%)
CMYK	cmyk(64.5%, 66.1%, 0%, 27.1%)
CIE-LAB	lab(34.51, 39.12, -64.44)
CIE-LCH	lch(34.51, 75.39, 301.26°)
OKLab	oklab(45.17% 0.0225 -0.1859)
OKLCH	oklch(45.17% 0.187 276.9)
XYZ	xyz(12.8843, 8.2574, 47.3597)
Luminance	0.0826 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.05

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423FBA #B7BA3F

analogous

#3F7ABA #423FBA #803FBA

triadic

#423FBA #BA423F #3FBA42

tetradic

#423FBA #BA3F7A #B7BA3F #3FBA80

square

#423FBA #BA3F7A #B7BA3F #3FBA80

split-complementary

#423FBA #BA803F #7ABA3F

monochromatic

#22205F #32308C #423FBA #6C6ACC #9997DC

Accessibility & contrast

On white

7.92

#423FBA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#423FBA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423FBA

7.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423FBA	#FFFFFF	#000000	##FFFFFF
##423FBA	1.00	7.92	2.65	7.92
#FFFFFF	7.92	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056BE

Deuteranopia (green-blind)

#004CB8

Tritanopia (blue-blind)

#005F77

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #423fba;
/* rgb */ color: rgb(66, 63, 186);
/* oklch */ color: oklch(45.2% 0.187 276.9);

Tailwind

colors: {
  custom: {
    50: '#8575d0',
    500: '#423fba',
    950: '#000000',
  },
}

SCSS

$custom: #423fba;
$custom-light: #8575d0;
$custom-dark: #000000;

JSON

{
  "hex": "#423fba",
  "rgb": {
    "r": 66,
    "g": 63,
    "b": 186
  },
  "hsl": {
    "h": 241.463,
    "s": 49.398,
    "l": 48.824
  },
  "oklch": {
    "l": 0.45173,
    "c": 0.18722,
    "h": 276.9
  },
  "luminance": 0.08258
}

Semantic roles & 50–950 ramp

primary

#423FBA

secondary

#C6C88D

accent

#D94FD6

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #423FBA

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

Preview Lab → · Contrast checker → · Palette generator →