#423F6B#423F6B

#423F6B is a dark, moderate blue. Relative luminance 0.058; OKLCH L 39.2% C 0.073 H 285.6°. Best body text is #FFFFFF at 9.74:1 contrast (WCAG AA passes).

Color values

HEX	#423F6B
RGB	rgb(66, 63, 107)
HSL	hsl(244, 26%, 33%)
HSV	hsv(244, 41%, 42%)
CMYK	cmyk(38.3%, 41.1%, 0%, 58%)
CIE-LAB	lab(28.84, 13.05, -25.23)
CIE-LCH	lch(28.84, 28.40, 297.36°)
OKLab	oklab(39.16% 0.0197 -0.0708)
OKLCH	oklch(39.16% 0.073 285.6)
XYZ	xyz(6.6774, 5.7746, 14.6699)
Luminance	0.0578 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423F6B #686B3F

analogous

#3F526B #423F6B #583F6B

triadic

#423F6B #6B423F #3F6B42

tetradic

#423F6B #6B3F52 #686B3F #3F6B58

square

#423F6B #6B3F52 #686B3F #3F6B58

split-complementary

#423F6B #6B583F #526B3F

monochromatic

#12121E #2A2844 #423F6B #5A5692 #7A76AE

Accessibility & contrast

On white

9.74

#423F6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#423F6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423F6B

9.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423F6B	#FFFFFF	#000000	##FFFFFF
##423F6B	1.00	9.74	2.16	9.74
#FFFFFF	9.74	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#31456D

Deuteranopia (green-blind)

#30436A

Tritanopia (blue-blind)

#374750

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #423f6b;
/* rgb */ color: rgb(66, 63, 107);
/* oklch */ color: oklch(39.2% 0.073 285.6);

Tailwind

colors: {
  custom: {
    50: '#787495',
    500: '#423f6b',
    950: '#000000',
  },
}

SCSS

$custom: #423f6b;
$custom-light: #787495;
$custom-dark: #000000;

JSON

{
  "hex": "#423f6b",
  "rgb": {
    "r": 66,
    "g": 63,
    "b": 107
  },
  "hsl": {
    "h": 244.091,
    "s": 25.882,
    "l": 33.333
  },
  "oklch": {
    "l": 0.39158,
    "c": 0.07348,
    "h": 285.6
  },
  "luminance": 0.05775
}

Semantic roles & 50–950 ramp

primary

#423F6B

secondary

#96996C

accent

#C266BC

background

#F7F7F9

surface

#EDEDF1

border

#C8C8CB

text

#09080D

muted

#7B7B7E

Preview Lab

Preview with #423F6B

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

Preview Lab → · Contrast checker → · Palette generator →