#4239B9#4239B9

#4239B9 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 44.1% C 0.193 H 278.1°. Best body text is #FFFFFF at 8.34:1 contrast (WCAG AA passes).

Color values

HEX	#4239B9
RGB	rgb(66, 57, 185)
HSL	hsl(244, 53%, 47%)
HSV	hsv(244, 69%, 73%)
CMYK	cmyk(64.3%, 69.2%, 0%, 27.5%)
CIE-LAB	lab(33.11, 42.36, -66.16)
CIE-LCH	lch(33.11, 78.56, 302.63°)
OKLab	oklab(44.13% 0.0272 -0.1909)
OKLCH	oklch(44.13% 0.193 278.1)
XYZ	xyz(12.4640, 7.5863, 46.6970)
Luminance	0.0759 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.86

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4239B9 #B0B939

analogous

#3970B9 #4239B9 #8239B9

triadic

#4239B9 #B94239 #39B942

tetradic

#4239B9 #B93970 #B0B939 #39B982

square

#4239B9 #B93970 #B0B939 #39B982

split-complementary

#4239B9 #B98239 #70B939

monochromatic

#211C5B #312B8A #4239B9 #6961CE #9590DD

Accessibility & contrast

On white

8.34

#4239B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#4239B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4239B9

8.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4239B9	#FFFFFF	#000000	##FFFFFF
##4239B9	1.00	8.34	2.52	8.34
#FFFFFF	8.34	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BD

Deuteranopia (green-blind)

#0049B7

Tritanopia (blue-blind)

#005B74

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #4239b9;
/* rgb */ color: rgb(66, 57, 185);
/* oklch */ color: oklch(44.1% 0.193 278.1);

Tailwind

colors: {
  custom: {
    50: '#8571cf',
    500: '#4239b9',
    950: '#000000',
  },
}

SCSS

$custom: #4239b9;
$custom-light: #8571cf;
$custom-dark: #000000;

JSON

{
  "hex": "#4239b9",
  "rgb": {
    "r": 66,
    "g": 57,
    "b": 185
  },
  "hsl": {
    "h": 244.219,
    "s": 52.893,
    "l": 47.451
  },
  "oklch": {
    "l": 0.44129,
    "c": 0.19282,
    "h": 278.1
  },
  "luminance": 0.07587
}

Semantic roles & 50–950 ramp

primary

#4239B9

secondary

#C3C886

accent

#DC4BD2

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #4239B9

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

Preview Lab → · Contrast checker → · Palette generator →