#423EA9#423EA9

#423EA9 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.5% C 0.166 H 278.6°. Best body text is #FFFFFF at 8.42:1 contrast (WCAG AA passes).

Color values

HEX	#423EA9
RGB	rgb(66, 62, 169)
HSL	hsl(242, 46%, 45%)
HSV	hsv(242, 63%, 66%)
CMYK	cmyk(60.9%, 63.3%, 0%, 33.7%)
CIE-LAB	lab(32.85, 34.06, -57.06)
CIE-LCH	lch(32.85, 66.45, 300.83°)
OKLab	oklab(43.52% 0.0249 -0.1642)
OKLCH	oklch(43.52% 0.166 278.6)
XYZ	xyz(11.1285, 7.4672, 38.3833)
Luminance	0.0747 (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

#423EA9 #A5A93E

analogous

#3E6FA9 #423EA9 #773EA9

triadic

#423EA9 #A9423E #3EA942

tetradic

#423EA9 #A93E6F #A5A93E #3EA977

square

#423EA9 #A93E6F #A5A93E #3EA977

split-complementary

#423EA9 #A9773E #6FA93E

monochromatic

#1F1D4F #312E7C #423EA9 #6360C5 #8F8CD5

Accessibility & contrast

On white

8.42

#423EA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#423EA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423EA9

8.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423EA9	#FFFFFF	#000000	##FFFFFF
##423EA9	1.00	8.42	2.49	8.42
#FFFFFF	8.42	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052AC

Deuteranopia (green-blind)

#0049A7

Tritanopia (blue-blind)

#00596D

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #423ea9;
/* rgb */ color: rgb(66, 62, 169);
/* oklch */ color: oklch(43.5% 0.166 278.6);

Tailwind

colors: {
  custom: {
    50: '#8174c3',
    500: '#423ea9',
    950: '#000000',
  },
}

SCSS

$custom: #423ea9;
$custom-light: #8174c3;
$custom-dark: #000000;

JSON

{
  "hex": "#423ea9",
  "rgb": {
    "r": 66,
    "g": 62,
    "b": 169
  },
  "hsl": {
    "h": 242.243,
    "s": 46.32,
    "l": 45.294
  },
  "oklch": {
    "l": 0.43515,
    "c": 0.16607,
    "h": 278.6
  },
  "luminance": 0.07468
}

Semantic roles & 50–950 ramp

primary

#423EA9

secondary

#BDC083

accent

#D652D1

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #423EA9

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

Preview Lab → · Contrast checker → · Palette generator →