#423EBB#423EBB

#423EBB is a mid, vivid blue. Relative luminance 0.082; OKLCH L 45.1% C 0.190 H 277.0°. Best body text is #FFFFFF at 7.96:1 contrast (WCAG AA passes).

Color values

HEX	#423EBB
RGB	rgb(66, 62, 187)
HSL	hsl(242, 50%, 49%)
HSV	hsv(242, 67%, 73%)
CMYK	cmyk(64.7%, 66.8%, 0%, 26.7%)
CIE-LAB	lab(34.38, 40.05, -65.26)
CIE-LCH	lch(34.38, 76.57, 301.54°)
OKLab	oklab(45.1% 0.0232 -0.1882)
OKLCH	oklch(45.1% 0.19 277)
XYZ	xyz(12.9361, 8.1903, 47.9032)
Luminance	0.0819 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.16

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423EBB #B7BB3E

analogous

#3E79BB #423EBB #813EBB

triadic

#423EBB #BB423E #3EBB42

tetradic

#423EBB #BB3E79 #B7BB3E #3EBB81

square

#423EBB #BB3E79 #B7BB3E #3EBB81

split-complementary

#423EBB #BB813E #79BB3E

monochromatic

#22205F #322F8D #423EBB #6C69CD #9997DC

Accessibility & contrast

On white

7.96

#423EBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#423EBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423EBB

7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423EBB	#FFFFFF	#000000	##FFFFFF
##423EBB	1.00	7.96	2.64	7.96
#FFFFFF	7.96	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056BF

Deuteranopia (green-blind)

#004BB9

Tritanopia (blue-blind)

#005F77

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #423ebb;
/* rgb */ color: rgb(66, 62, 187);
/* oklch */ color: oklch(45.1% 0.190 277.0);

Tailwind

colors: {
  custom: {
    50: '#8574d0',
    500: '#423ebb',
    950: '#000000',
  },
}

SCSS

$custom: #423ebb;
$custom-light: #8574d0;
$custom-dark: #000000;

JSON

{
  "hex": "#423ebb",
  "rgb": {
    "r": 66,
    "g": 62,
    "b": 187
  },
  "hsl": {
    "h": 241.92,
    "s": 50.201,
    "l": 48.824
  },
  "oklch": {
    "l": 0.45101,
    "c": 0.18966,
    "h": 277
  },
  "luminance": 0.08191
}

Semantic roles & 50–950 ramp

primary

#423EBB

secondary

#C6C88D

accent

#DA4ED5

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #423EBB

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

Preview Lab → · Contrast checker → · Palette generator →