#4239B2#4239B2

#4239B2 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.5% C 0.184 H 278.8°. Best body text is #FFFFFF at 8.54:1 contrast (WCAG AA passes).

Color values

HEX	#4239B2
RGB	rgb(66, 57, 178)
HSL	hsl(244, 51%, 46%)
HSV	hsv(244, 68%, 70%)
CMYK	cmyk(62.9%, 68%, 0%, 30.2%)
CIE-LAB	lab(32.48, 40.08, -63.04)
CIE-LCH	lch(32.48, 74.71, 302.45°)
OKLab	oklab(43.48% 0.0282 -0.1818)
OKLCH	oklch(43.48% 0.184 278.8)
XYZ	xyz(11.7432, 7.2979, 42.9007)
Luminance	0.0730 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.87

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4239B2 #A9B239

analogous

#396CB2 #4239B2 #7E39B2

triadic

#4239B2 #B24239 #39B242

tetradic

#4239B2 #B2396C #A9B239 #39B27E

square

#4239B2 #B2396C #A9B239 #39B27E

split-complementary

#4239B2 #B27E39 #6CB239

monochromatic

#201B55 #312A84 #4239B2 #655DCB #918BDA

Accessibility & contrast

On white

8.54

#4239B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#4239B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4239B2

8.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4239B2	#FFFFFF	#000000	##FFFFFF
##4239B2	1.00	8.54	2.46	8.54
#FFFFFF	8.54	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B6

Deuteranopia (green-blind)

#0047B0

Tritanopia (blue-blind)

#005971

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #4239b2;
/* rgb */ color: rgb(66, 57, 178);
/* oklch */ color: oklch(43.5% 0.184 278.8);

Tailwind

colors: {
  custom: {
    50: '#8470ca',
    500: '#4239b2',
    950: '#000000',
  },
}

SCSS

$custom: #4239b2;
$custom-light: #8470ca;
$custom-dark: #000000;

JSON

{
  "hex": "#4239b2",
  "rgb": {
    "r": 66,
    "g": 57,
    "b": 178
  },
  "hsl": {
    "h": 244.463,
    "s": 51.489,
    "l": 46.078
  },
  "oklch": {
    "l": 0.43483,
    "c": 0.18393,
    "h": 278.8
  },
  "luminance": 0.07299
}

Semantic roles & 50–950 ramp

primary

#4239B2

secondary

#C0C482

accent

#DB4DD0

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #4239B2

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

Preview Lab → · Contrast checker → · Palette generator →