#423F7C#423F7C

#423F7C is a dark, moderate blue. Relative luminance 0.062; OKLCH L 40.2% C 0.100 H 283.1°. Best body text is #FFFFFF at 9.40:1 contrast (WCAG AA passes).

Color values

HEX	#423F7C
RGB	rgb(66, 63, 124)
HSL	hsl(243, 33%, 37%)
HSV	hsv(243, 49%, 49%)
CMYK	cmyk(46.8%, 49.2%, 0%, 51.4%)
CIE-LAB	lab(29.83, 18.43, -34.39)
CIE-LCH	lch(29.83, 39.01, 298.19°)
OKLab	oklab(40.24% 0.0228 -0.0975)
OKLCH	oklch(40.24% 0.1 283.1)
XYZ	xyz(7.6613, 6.1682, 19.8518)
Luminance	0.0617 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423F7C #797C3F

analogous

#3F5B7C #423F7C #613F7C

triadic

#423F7C #7C423F #3F7C42

tetradic

#423F7C #7C3F5B #797C3F #3F7C61

square

#423F7C #7C3F5B #797C3F #3F7C61

split-complementary

#423F7C #7C613F #5B7C3F

monochromatic

#17162B #2C2A53 #423F7C #5854A5 #7D7ABB

Accessibility & contrast

On white

9.40

#423F7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#423F7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423F7C

9.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423F7C	#FFFFFF	#000000	##FFFFFF
##423F7C	1.00	9.40	2.23	9.40
#FFFFFF	9.40	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#26487E

Deuteranopia (green-blind)

#23447B

Tritanopia (blue-blind)

#2F4C57

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #423f7c;
/* rgb */ color: rgb(66, 63, 124);
/* oklch */ color: oklch(40.2% 0.100 283.1);

Tailwind

colors: {
  custom: {
    50: '#7a74a2',
    500: '#423f7c',
    950: '#000000',
  },
}

SCSS

$custom: #423f7c;
$custom-light: #7a74a2;
$custom-dark: #000000;

JSON

{
  "hex": "#423f7c",
  "rgb": {
    "r": 66,
    "g": 63,
    "b": 124
  },
  "hsl": {
    "h": 242.951,
    "s": 32.62,
    "l": 36.667
  },
  "oklch": {
    "l": 0.40239,
    "c": 0.10016,
    "h": 283.1
  },
  "luminance": 0.06169
}

Semantic roles & 50–950 ramp

primary

#423F7C

secondary

#A3A671

accent

#C95FC4

background

#F7F7FA

surface

#EEEDF3

border

#C9C8CD

text

#09080F

muted

#7B7B7F

Preview Lab

Preview with #423F7C

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

Preview Lab → · Contrast checker → · Palette generator →