#423F7A#423F7A

#423F7A is a dark, moderate blue. Relative luminance 0.061; OKLCH L 40.1% C 0.097 H 283.4°. Best body text is #FFFFFF at 9.44:1 contrast (WCAG AA passes).

Color values

HEX	#423F7A
RGB	rgb(66, 63, 122)
HSL	hsl(243, 32%, 36%)
HSV	hsv(243, 48%, 48%)
CMYK	cmyk(45.9%, 48.4%, 0%, 52.2%)
CIE-LAB	lab(29.71, 17.78, -33.33)
CIE-LCH	lch(29.71, 37.78, 298.08°)
OKLab	oklab(40.1% 0.0225 -0.0944)
OKLCH	oklch(40.1% 0.097 283.4)
XYZ	xyz(7.5361, 6.1181, 19.1924)
Luminance	0.0612 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423F7A #777A3F

analogous

#3F5A7A #423F7A #603F7A

triadic

#423F7A #7A423F #3F7A42

tetradic

#423F7A #7A3F5A #777A3F #3F7A60

square

#423F7A #7A3F5A #777A3F #3F7A60

split-complementary

#423F7A #7A603F #5A7A3F

monochromatic

#161529 #2C2A52 #423F7A #5854A2 #7D79BA

Accessibility & contrast

On white

9.44

#423F7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#423F7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423F7A

9.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423F7A	#FFFFFF	#000000	##FFFFFF
##423F7A	1.00	9.44	2.22	9.44
#FFFFFF	9.44	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#27487C

Deuteranopia (green-blind)

#254479

Tritanopia (blue-blind)

#304B56

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #423f7a;
/* rgb */ color: rgb(66, 63, 122);
/* oklch */ color: oklch(40.1% 0.097 283.4);

Tailwind

colors: {
  custom: {
    50: '#7a74a1',
    500: '#423f7a',
    950: '#000000',
  },
}

SCSS

$custom: #423f7a;
$custom-light: #7a74a1;
$custom-dark: #000000;

JSON

{
  "hex": "#423f7a",
  "rgb": {
    "r": 66,
    "g": 63,
    "b": 122
  },
  "hsl": {
    "h": 243.051,
    "s": 31.892,
    "l": 36.275
  },
  "oklch": {
    "l": 0.40104,
    "c": 0.09709,
    "h": 283.4
  },
  "luminance": 0.06118
}

Semantic roles & 50–950 ramp

primary

#423F7A

secondary

#A2A470

accent

#C860C3

background

#F7F7F9

surface

#EEEDF2

border

#C9C8CC

text

#09080F

muted

#7B7B7E

Preview Lab

Preview with #423F7A

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

Preview Lab → · Contrast checker → · Palette generator →