#4239CB#4239CB

#4239CB is a mid, highly saturated blue. Relative luminance 0.084; OKLCH L 45.8% C 0.215 H 276.5°. Best body text is #FFFFFF at 7.84:1 contrast (WCAG AA passes).

Color values

HEX	#4239CB
RGB	rgb(66, 57, 203)
HSL	hsl(244, 58%, 51%)
HSV	hsv(244, 72%, 80%)
CMYK	cmyk(67.5%, 71.9%, 0%, 20.4%)
CIE-LAB	lab(34.79, 48.15, -73.94)
CIE-LCH	lch(34.79, 88.23, 303.07°)
OKLab	oklab(45.85% 0.0242 -0.2136)
OKLCH	oklch(45.85% 0.215 276.5)
XYZ	xyz(14.4859, 8.3950, 57.3453)
Luminance	0.0840 (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

#4239CB #C2CB39

analogous

#3979CB #4239CB #8B39CB

triadic

#4239CB #CB4239 #39CB42

tetradic

#4239CB #CB3979 #C2CB39 #39CB8B

square

#4239CB #CB3979 #C2CB39 #39CB8B

split-complementary

#4239CB #CB8B39 #79CB39

monochromatic

#221D6D #31299D #4239CB #7069D8 #9F9AE4

Accessibility & contrast

On white

7.84

#4239CB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#4239CB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4239CB

7.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4239CB	#FFFFFF	#000000	##FFFFFF
##4239CB	1.00	7.84	2.68	7.84
#FFFFFF	7.84	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058CF

Deuteranopia (green-blind)

#004BC8

Tritanopia (blue-blind)

#00627E

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #4239cb;
/* rgb */ color: rgb(66, 57, 203);
/* oklch */ color: oklch(45.8% 0.215 276.5);

Tailwind

colors: {
  custom: {
    50: '#8871dc',
    500: '#4239cb',
    950: '#000000',
  },
}

SCSS

$custom: #4239cb;
$custom-light: #8871dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4239cb",
  "rgb": {
    "r": 66,
    "g": 57,
    "b": 203
  },
  "hsl": {
    "h": 243.699,
    "s": 58.4,
    "l": 50.98
  },
  "oklch": {
    "l": 0.45847,
    "c": 0.21499,
    "h": 276.5
  },
  "luminance": 0.08396
}

Semantic roles & 50–950 ramp

primary

#4239CB

secondary

#CCD090

accent

#E246D8

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #4239CB

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

Preview Lab → · Contrast checker → · Palette generator →