#4239AD#4239AD

#4239AD is a dark, vivid blue. Relative luminance 0.071; OKLCH L 43.0% C 0.177 H 279.3°. Best body text is #FFFFFF at 8.68:1 contrast (WCAG AA passes).

Color values

HEX	#4239AD
RGB	rgb(66, 57, 173)
HSL	hsl(245, 50%, 45%)
HSV	hsv(245, 67%, 68%)
CMYK	cmyk(61.8%, 67.1%, 0%, 32.2%)
CIE-LAB	lab(32.04, 38.45, -60.78)
CIE-LCH	lch(32.04, 71.92, 302.31°)
OKLab	oklab(43.03% 0.0288 -0.1751)
OKLCH	oklch(43.03% 0.178 279.3)
XYZ	xyz(11.2503, 7.1008, 40.3048)
Luminance	0.0710 (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

#4239AD #A4AD39

analogous

#396AAD #4239AD #7C39AD

triadic

#4239AD #AD4239 #39AD42

tetradic

#4239AD #AD396A #A4AD39 #39AD7C

square

#4239AD #AD396A #A4AD39 #39AD7C

split-complementary

#4239AD #AD7C39 #6AAD39

monochromatic

#1F1B51 #302A7F #4239AD #635AC9 #8F88D8

Accessibility & contrast

On white

8.68

#4239AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#4239AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4239AD

8.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4239AD	#FFFFFF	#000000	##FFFFFF
##4239AD	1.00	8.68	2.42	8.68
#FFFFFF	8.68	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B1

Deuteranopia (green-blind)

#0047AB

Tritanopia (blue-blind)

#00576E

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #4239ad;
/* rgb */ color: rgb(66, 57, 173);
/* oklch */ color: oklch(43.0% 0.177 279.3);

Tailwind

colors: {
  custom: {
    50: '#8370c6',
    500: '#4239ad',
    950: '#000000',
  },
}

SCSS

$custom: #4239ad;
$custom-light: #8370c6;
$custom-dark: #000000;

JSON

{
  "hex": "#4239ad",
  "rgb": {
    "r": 66,
    "g": 57,
    "b": 173
  },
  "hsl": {
    "h": 244.655,
    "s": 50.435,
    "l": 45.098
  },
  "oklch": {
    "l": 0.43029,
    "c": 0.1775,
    "h": 279.3
  },
  "luminance": 0.07102
}

Semantic roles & 50–950 ramp

primary

#4239AD

secondary

#BDC280

accent

#DA4ECF

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #4239AD

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

Preview Lab → · Contrast checker → · Palette generator →