#423DA0#423DA0

#423DA0 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.6% C 0.155 H 279.8°. Best body text is #FFFFFF at 8.73:1 contrast (WCAG AA passes).

Color values

HEX	#423DA0
RGB	rgb(66, 61, 160)
HSL	hsl(243, 45%, 43%)
HSV	hsv(243, 62%, 63%)
CMYK	cmyk(58.8%, 61.9%, 0%, 37.3%)
CIE-LAB	lab(31.88, 31.67, -53.22)
CIE-LCH	lch(31.88, 61.93, 300.76°)
OKLab	oklab(42.58% 0.0264 -0.1529)
OKLCH	oklch(42.58% 0.155 279.8)
XYZ	xyz(10.2587, 7.0331, 34.0678)
Luminance	0.0703 (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

#423DA0 #9BA03D

analogous

#3D69A0 #423DA0 #733DA0

triadic

#423DA0 #A0423D #3DA042

tetradic

#423DA0 #A03D69 #9BA03D #3DA073

square

#423DA0 #A03D69 #9BA03D #3DA073

split-complementary

#423DA0 #A0733D #69A03D

monochromatic

#1D1B47 #302C74 #423DA0 #5F5AC0 #8A86D1

Accessibility & contrast

On white

8.73

#423DA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#423DA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423DA0

8.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423DA0	#FFFFFF	#000000	##FFFFFF
##423DA0	1.00	8.73	2.41	8.73
#FFFFFF	8.73	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA3

Deuteranopia (green-blind)

#00479E

Tritanopia (blue-blind)

#075568

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #423da0;
/* rgb */ color: rgb(66, 61, 160);
/* oklch */ color: oklch(42.6% 0.155 279.8);

Tailwind

colors: {
  custom: {
    50: '#8073bd',
    500: '#423da0',
    950: '#000000',
  },
}

SCSS

$custom: #423da0;
$custom-light: #8073bd;
$custom-dark: #000000;

JSON

{
  "hex": "#423da0",
  "rgb": {
    "r": 66,
    "g": 61,
    "b": 160
  },
  "hsl": {
    "h": 243.03,
    "s": 44.796,
    "l": 43.333
  },
  "oklch": {
    "l": 0.4258,
    "c": 0.15517,
    "h": 279.8
  },
  "luminance": 0.07034
}

Semantic roles & 50–950 ramp

primary

#423DA0

secondary

#B8BB7D

accent

#D453CE

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #423DA0

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

Preview Lab → · Contrast checker → · Palette generator →