#423F97#423F97

#423F97 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.2% C 0.140 H 280.1°. Best body text is #FFFFFF at 8.79:1 contrast (WCAG AA passes).

Color values

HEX	#423F97
RGB	rgb(66, 63, 151)
HSL	hsl(242, 41%, 42%)
HSV	hsv(242, 58%, 59%)
CMYK	cmyk(56.3%, 58.3%, 0%, 40.8%)
CIE-LAB	lab(31.69, 27.38, -48.08)
CIE-LCH	lch(31.69, 55.33, 299.66°)
OKLab	oklab(42.22% 0.0245 -0.1378)
OKLCH	oklch(42.22% 0.14 280.1)
XYZ	xyz(9.6084, 6.9470, 30.1068)
Luminance	0.0695 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423F97 #94973F

analogous

#3F6897 #423F97 #6E3F97

triadic

#423F97 #97423F #3F9742

tetradic

#423F97 #973F68 #94973F #3F976E

square

#423F97 #973F68 #94973F #3F976E

split-complementary

#423F97 #976E3F #68973F

monochromatic

#1C1B41 #2F2D6C #423F97 #5D59BA #8785CC

Accessibility & contrast

On white

8.79

#423F97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#423F97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423F97

8.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423F97	#FFFFFF	#000000	##FFFFFF
##423F97	1.00	8.79	2.39	8.79
#FFFFFF	8.79	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004E9A

Deuteranopia (green-blind)

#004795

Tritanopia (blue-blind)

#185464

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #423f97;
/* rgb */ color: rgb(66, 63, 151);
/* oklch */ color: oklch(42.2% 0.140 280.1);

Tailwind

colors: {
  custom: {
    50: '#7e74b6',
    500: '#423f97',
    950: '#000000',
  },
}

SCSS

$custom: #423f97;
$custom-light: #7e74b6;
$custom-dark: #000000;

JSON

{
  "hex": "#423f97",
  "rgb": {
    "r": 66,
    "g": 63,
    "b": 151
  },
  "hsl": {
    "h": 242.045,
    "s": 41.121,
    "l": 41.961
  },
  "oklch": {
    "l": 0.42218,
    "c": 0.13995,
    "h": 280.1
  },
  "luminance": 0.06948
}

Semantic roles & 50–950 ramp

primary

#423F97

secondary

#B4B67C

accent

#D157CD

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0811

muted

#7C7B80

Preview Lab

Preview with #423F97

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

Preview Lab → · Contrast checker → · Palette generator →