#423C8B#423C8B

#423C8B is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.7% C 0.127 H 282.6°. Best body text is #FFFFFF at 9.33:1 contrast (WCAG AA passes).

Color values

HEX	#423C8B
RGB	rgb(66, 60, 139)
HSL	hsl(245, 40%, 39%)
HSV	hsv(245, 57%, 55%)
CMYK	cmyk(52.5%, 56.8%, 0%, 45.5%)
CIE-LAB	lab(30.04, 25.32, -43.37)
CIE-LCH	lch(30.04, 50.22, 300.27°)
OKLab	oklab(40.72% 0.0277 -0.124)
OKLCH	oklch(40.72% 0.127 282.6)
XYZ	xyz(8.5214, 6.2536, 25.1791)
Luminance	0.0625 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#423C8B #858B3C

analogous

#3C5E8B #423C8B #6A3C8B

triadic

#423C8B #8B423C #3C8B42

tetradic

#423C8B #8B3C5E #858B3C #3C8B6A

square

#423C8B #8B3C5E #858B3C #3C8B6A

split-complementary

#423C8B #8B6A3C #5E8B3C

monochromatic

#191736 #2E2A60 #423C8B #5851B4 #817BC6

Accessibility & contrast

On white

9.33

#423C8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#423C8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #423C8B

9.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##423C8B	#FFFFFF	#000000	##FFFFFF
##423C8B	1.00	9.33	2.25	9.33
#FFFFFF	9.33	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A498E

Deuteranopia (green-blind)

#004489

Tritanopia (blue-blind)

#254E5D

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #423c8b;
/* rgb */ color: rgb(66, 60, 139);
/* oklch */ color: oklch(40.7% 0.127 282.6);

Tailwind

colors: {
  custom: {
    50: '#7c72ad',
    500: '#423c8b',
    950: '#000000',
  },
}

SCSS

$custom: #423c8b;
$custom-light: #7c72ad;
$custom-dark: #000000;

JSON

{
  "hex": "#423c8b",
  "rgb": {
    "r": 66,
    "g": 60,
    "b": 139
  },
  "hsl": {
    "h": 244.557,
    "s": 39.698,
    "l": 39.02
  },
  "oklch": {
    "l": 0.4072,
    "c": 0.12703,
    "h": 282.6
  },
  "luminance": 0.06254
}

Semantic roles & 50–950 ramp

primary

#423C8B

secondary

#ABB073

accent

#D058C7

background

#F7F6FA

surface

#EEECF4

border

#C9C7CE

text

#0A0810

muted

#7C7B7F

Preview Lab

Preview with #423C8B

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

Preview Lab → · Contrast checker → · Palette generator →