#423F79#423F79

#423F79 is a dark, moderate blue. Relative luminance 0.061; OKLCH L 40.0% C 0.096 H 283.5°. Best body text is #FFFFFF at 9.46:1 contrast (WCAG AA passes).

Color values

HEX	#423F79
RGB	rgb(66, 63, 121)
HSL	hsl(243, 32%, 36%)
HSV	hsv(243, 48%, 47%)
CMYK	cmyk(45.5%, 47.9%, 0%, 52.5%)
CIE-LAB	lab(29.65, 17.46, -32.80)
CIE-LCH	lch(29.65, 37.16, 298.03°)
OKLab	oklab(40.04% 0.0224 -0.0929)
OKLCH	oklch(40.04% 0.096 283.5)
XYZ	xyz(7.4745, 6.0934, 18.8678)
Luminance	0.0609 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423F79 #76793F

analogous

#3F5979 #423F79 #5F3F79

triadic

#423F79 #79423F #3F7942

tetradic

#423F79 #793F59 #76793F #3F795F

square

#423F79 #793F59 #76793F #3F795F

split-complementary

#423F79 #795F3F #59793F

monochromatic

#161529 #2C2A51 #423F79 #5854A1 #7C79B9

Accessibility & contrast

On white

9.46

#423F79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#423F79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423F79

9.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423F79	#FFFFFF	#000000	##FFFFFF
##423F79	1.00	9.46	2.22	9.46
#FFFFFF	9.46	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28487B

Deuteranopia (green-blind)

#264478

Tritanopia (blue-blind)

#314B56

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #423f79;
/* rgb */ color: rgb(66, 63, 121);
/* oklch */ color: oklch(40.0% 0.096 283.5);

Tailwind

colors: {
  custom: {
    50: '#7a74a0',
    500: '#423f79',
    950: '#000000',
  },
}

SCSS

$custom: #423f79;
$custom-light: #7a74a0;
$custom-dark: #000000;

JSON

{
  "hex": "#423f79",
  "rgb": {
    "r": 66,
    "g": 63,
    "b": 121
  },
  "hsl": {
    "h": 243.103,
    "s": 31.522,
    "l": 36.078
  },
  "oklch": {
    "l": 0.40038,
    "c": 0.09555,
    "h": 283.5
  },
  "luminance": 0.06094
}

Semantic roles & 50–950 ramp

primary

#423F79

secondary

#A1A470

accent

#C860C2

background

#F7F7F9

surface

#EEEDF2

border

#C9C8CC

text

#09080F

muted

#7B7B7E

Preview Lab

Preview with #423F79

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

Preview Lab → · Contrast checker → · Palette generator →