#4239B0#4239B0

#4239B0 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.3% C 0.181 H 279.0°. Best body text is #FFFFFF at 8.59:1 contrast (WCAG AA passes).

Color values

HEX	#4239B0
RGB	rgb(66, 57, 176)
HSL	hsl(245, 51%, 46%)
HSV	hsv(245, 68%, 69%)
CMYK	cmyk(62.5%, 67.6%, 0%, 31%)
CIE-LAB	lab(32.30, 39.43, -62.14)
CIE-LCH	lch(32.30, 73.60, 302.40°)
OKLab	oklab(43.3% 0.0285 -0.1791)
OKLCH	oklch(43.3% 0.181 279)
XYZ	xyz(11.5439, 7.2182, 41.8508)
Luminance	0.0722 (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

#4239B0 #A7B039

analogous

#396BB0 #4239B0 #7D39B0

triadic

#4239B0 #B04239 #39B042

tetradic

#4239B0 #B0396B #A7B039 #39B07D

square

#4239B0 #B0396B #A7B039 #39B07D

split-complementary

#4239B0 #B07D39 #6BB039

monochromatic

#1F1B54 #312A82 #4239B0 #645CCA #908AD9

Accessibility & contrast

On white

8.59

#4239B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#4239B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4239B0

8.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4239B0	#FFFFFF	#000000	##FFFFFF
##4239B0	1.00	8.59	2.44	8.59
#FFFFFF	8.59	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B4

Deuteranopia (green-blind)

#0047AE

Tritanopia (blue-blind)

#00586F

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #4239b0;
/* rgb */ color: rgb(66, 57, 176);
/* oklch */ color: oklch(43.3% 0.181 279.0);

Tailwind

colors: {
  custom: {
    50: '#8370c9',
    500: '#4239b0',
    950: '#000000',
  },
}

SCSS

$custom: #4239b0;
$custom-light: #8370c9;
$custom-dark: #000000;

JSON

{
  "hex": "#4239b0",
  "rgb": {
    "r": 66,
    "g": 57,
    "b": 176
  },
  "hsl": {
    "h": 244.538,
    "s": 51.073,
    "l": 45.686
  },
  "oklch": {
    "l": 0.433,
    "c": 0.18137,
    "h": 279
  },
  "luminance": 0.07219
}

Semantic roles & 50–950 ramp

primary

#4239B0

secondary

#BEC481

accent

#DB4DD0

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #4239B0

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

Preview Lab → · Contrast checker → · Palette generator →