#423DB0#423DB0

#423DB0 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 44.0% C 0.177 H 278.2°. Best body text is #FFFFFF at 8.31:1 contrast (WCAG AA passes).

Color values

HEX	#423DB0
RGB	rgb(66, 61, 176)
HSL	hsl(243, 49%, 46%)
HSV	hsv(243, 65%, 69%)
CMYK	cmyk(62.5%, 65.3%, 0%, 31%)
CIE-LAB	lab(33.20, 37.01, -60.67)
CIE-LCH	lch(33.20, 71.07, 301.39°)
OKLab	oklab(43.95% 0.0252 -0.1748)
OKLCH	oklch(43.95% 0.177 278.2)
XYZ	xyz(11.7495, 7.6294, 41.9193)
Luminance	0.0763 (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

#423DB0 #ABB03D

analogous

#3D72B0 #423DB0 #7C3DB0

triadic

#423DB0 #B0423D #3DB042

tetradic

#423DB0 #B03D72 #ABB03D #3DB07C

square

#423DB0 #B03D72 #ABB03D #3DB07C

split-complementary

#423DB0 #B07C3D #72B03D

monochromatic

#201D55 #312D83 #423DB0 #6662C8 #928FD8

Accessibility & contrast

On white

8.31

#423DB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#423DB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423DB0

8.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423DB0	#FFFFFF	#000000	##FFFFFF
##423DB0	1.00	8.31	2.53	8.31
#FFFFFF	8.31	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B4

Deuteranopia (green-blind)

#0049AE

Tritanopia (blue-blind)

#005A71

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #423db0;
/* rgb */ color: rgb(66, 61, 176);
/* oklch */ color: oklch(44.0% 0.177 278.2);

Tailwind

colors: {
  custom: {
    50: '#8373c9',
    500: '#423db0',
    950: '#000000',
  },
}

SCSS

$custom: #423db0;
$custom-light: #8373c9;
$custom-dark: #000000;

JSON

{
  "hex": "#423db0",
  "rgb": {
    "r": 66,
    "g": 61,
    "b": 176
  },
  "hsl": {
    "h": 242.609,
    "s": 48.523,
    "l": 46.471
  },
  "oklch": {
    "l": 0.43953,
    "c": 0.1766,
    "h": 278.2
  },
  "luminance": 0.0763
}

Semantic roles & 50–950 ramp

primary

#423DB0

secondary

#C0C386

accent

#D850D2

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #423DB0

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

Preview Lab → · Contrast checker → · Palette generator →