#4243AF#4243AF

#4243AF is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.9% C 0.168 H 276.8°. Best body text is #FFFFFF at 7.91:1 contrast (WCAG AA passes).

Color values

HEX	#4243AF
RGB	rgb(66, 67, 175)
HSL	hsl(239, 45%, 47%)
HSV	hsv(239, 62%, 69%)
CMYK	cmyk(62.3%, 61.7%, 0%, 31.4%)
CIE-LAB	lab(34.53, 32.95, -57.90)
CIE-LCH	lch(34.53, 66.62, 299.64°)
OKLab	oklab(44.9% 0.02 -0.1666)
OKLCH	oklch(44.9% 0.168 276.8)
XYZ	xyz(11.9893, 8.2668, 41.5130)
Luminance	0.0827 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4243AF #AFAE42

analogous

#4279AF #4243AF #7842AF

triadic

#4243AF #AF4243 #43AF42

tetradic

#4243AF #AF4279 #AFAE42 #42AF78

square

#4243AF #AF4279 #AFAE42 #42AF78

split-complementary

#4243AF #AF7842 #79AF42

monochromatic

#202156 #313283 #4243AF #6869C6 #9595D7

Accessibility & contrast

On white

7.91

#4243AF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#4243AF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4243AF

7.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4243AF	#FFFFFF	#000000	##FFFFFF
##4243AF	1.00	7.91	2.65	7.91
#FFFFFF	7.91	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B3

Deuteranopia (green-blind)

#004DAD

Tritanopia (blue-blind)

#005E72

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #4243af;
/* rgb */ color: rgb(66, 67, 175);
/* oklch */ color: oklch(44.9% 0.168 276.8);

Tailwind

colors: {
  custom: {
    50: '#8277c8',
    500: '#4243af',
    950: '#000000',
  },
}

SCSS

$custom: #4243af;
$custom-light: #8277c8;
$custom-dark: #000000;

JSON

{
  "hex": "#4243af",
  "rgb": {
    "r": 66,
    "g": 67,
    "b": 175
  },
  "hsl": {
    "h": 239.45,
    "s": 45.228,
    "l": 47.255
  },
  "oklch": {
    "l": 0.44903,
    "c": 0.16783,
    "h": 276.8
  },
  "luminance": 0.08268
}

Semantic roles & 50–950 ramp

primary

#4243AF

secondary

#C2C28A

accent

#D453D5

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #4243AF

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

Preview Lab → · Contrast checker → · Palette generator →