#423DB4#423DB4

#423DB4 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.3% C 0.182 H 277.8°. Best body text is #FFFFFF at 8.21:1 contrast (WCAG AA passes).

Color values

HEX	#423DB4
RGB	rgb(66, 61, 180)
HSL	hsl(243, 49%, 47%)
HSV	hsv(243, 66%, 71%)
CMYK	cmyk(63.3%, 66.1%, 0%, 29.4%)
CIE-LAB	lab(33.54, 38.34, -62.49)
CIE-LCH	lch(33.54, 73.31, 301.53°)
OKLab	oklab(44.31% 0.0247 -0.1801)
OKLCH	oklch(44.31% 0.182 277.8)
XYZ	xyz(12.1511, 7.7901, 44.0345)
Luminance	0.0779 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.18

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423DB4 #AFB43D

analogous

#3D74B4 #423DB4 #7E3DB4

triadic

#423DB4 #B4423D #3DB442

tetradic

#423DB4 #B43D74 #AFB43D #3DB47E

square

#423DB4 #B43D74 #AFB43D #3DB47E

split-complementary

#423DB4 #B47E3D #74B43D

monochromatic

#201E59 #312E86 #423DB4 #6864CA #9592DA

Accessibility & contrast

On white

8.21

#423DB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#423DB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423DB4

8.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423DB4	#FFFFFF	#000000	##FFFFFF
##423DB4	1.00	8.21	2.56	8.21
#FFFFFF	8.21	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B8

Deuteranopia (green-blind)

#004AB2

Tritanopia (blue-blind)

#005C73

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #423db4;
/* rgb */ color: rgb(66, 61, 180);
/* oklch */ color: oklch(44.3% 0.182 277.8);

Tailwind

colors: {
  custom: {
    50: '#8473cb',
    500: '#423db4',
    950: '#000000',
  },
}

SCSS

$custom: #423db4;
$custom-light: #8473cb;
$custom-dark: #000000;

JSON

{
  "hex": "#423db4",
  "rgb": {
    "r": 66,
    "g": 61,
    "b": 180
  },
  "hsl": {
    "h": 242.521,
    "s": 49.378,
    "l": 47.255
  },
  "oklch": {
    "l": 0.44308,
    "c": 0.18181,
    "h": 277.8
  },
  "luminance": 0.07791
}

Semantic roles & 50–950 ramp

primary

#423DB4

secondary

#C2C588

accent

#D94FD3

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #423DB4

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

Preview Lab → · Contrast checker → · Palette generator →