#423DAE#423DAE

#423DAE is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.8% C 0.174 H 278.4°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#423DAE
RGB	rgb(66, 61, 174)
HSL	hsl(243, 48%, 46%)
HSV	hsv(243, 65%, 68%)
CMYK	cmyk(62.1%, 64.9%, 0%, 31.8%)
CIE-LAB	lab(33.03, 36.35, -59.75)
CIE-LCH	lch(33.03, 69.94, 301.31°)
OKLab	oklab(43.78% 0.0254 -0.1721)
OKLCH	oklch(43.78% 0.174 278.4)
XYZ	xyz(11.5530, 7.5508, 40.8848)
Luminance	0.0755 (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

#423DAE #A9AE3D

analogous

#3D70AE #423DAE #7A3DAE

triadic

#423DAE #AE423D #3DAE42

tetradic

#423DAE #AE3D70 #A9AE3D #3DAE7A

square

#423DAE #AE3D70 #A9AE3D #3DAE7A

split-complementary

#423DAE #AE7A3D #70AE3D

monochromatic

#201D53 #312D81 #423DAE #6561C8 #918ED7

Accessibility & contrast

On white

8.37

#423DAE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#423DAE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423DAE

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423DAE	#FFFFFF	#000000	##FFFFFF
##423DAE	1.00	8.37	2.51	8.37
#FFFFFF	8.37	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B2

Deuteranopia (green-blind)

#0049AC

Tritanopia (blue-blind)

#005A70

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #423dae;
/* rgb */ color: rgb(66, 61, 174);
/* oklch */ color: oklch(43.8% 0.174 278.4);

Tailwind

colors: {
  custom: {
    50: '#8273c7',
    500: '#423dae',
    950: '#000000',
  },
}

SCSS

$custom: #423dae;
$custom-light: #8273c7;
$custom-dark: #000000;

JSON

{
  "hex": "#423dae",
  "rgb": {
    "r": 66,
    "g": 61,
    "b": 174
  },
  "hsl": {
    "h": 242.655,
    "s": 48.085,
    "l": 46.078
  },
  "oklch": {
    "l": 0.43777,
    "c": 0.17397,
    "h": 278.4
  },
  "luminance": 0.07552
}

Semantic roles & 50–950 ramp

primary

#423DAE

secondary

#C0C285

accent

#D850D2

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #423DAE

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

Preview Lab → · Contrast checker → · Palette generator →