#4237CF#4237CF

#4237CF is a mid, highly saturated blue. Relative luminance 0.084; OKLCH L 46.0% C 0.222 H 276.4°. Best body text is #FFFFFF at 7.84:1 contrast (WCAG AA passes).

Color values

HEX	#4237CF
RGB	rgb(66, 55, 207)
HSL	hsl(244, 61%, 51%)
HSV	hsv(244, 73%, 81%)
CMYK	cmyk(68.1%, 73.4%, 0%, 18.8%)
CIE-LAB	lab(34.79, 50.50, -76.27)
CIE-LCH	lch(34.79, 91.47, 303.51°)
OKLab	oklab(45.96% 0.0246 -0.2204)
OKLCH	oklch(45.96% 0.222 276.4)
XYZ	xyz(14.8718, 8.3943, 59.8559)
Luminance	0.0840 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 2.32

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4237CF #C4CF37

analogous

#3778CF #4237CF #8E37CF

triadic

#4237CF #CF4237 #37CF42

tetradic

#4237CF #CF3778 #C4CF37 #37CF8E

square

#4237CF #CF3778 #C4CF37 #37CF8E

split-complementary

#4237CF #CF8E37 #78CF37

monochromatic

#211B71 #3027A2 #4237CF #7168DB #9F9AE7

Accessibility & contrast

On white

7.84

#4237CF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#4237CF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4237CF

7.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4237CF	#FFFFFF	#000000	##FFFFFF
##4237CF	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)

#0058D3

Deuteranopia (green-blind)

#004BCC

Tritanopia (blue-blind)

#006280

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #4237cf;
/* rgb */ color: rgb(66, 55, 207);
/* oklch */ color: oklch(46.0% 0.222 276.4);

Tailwind

colors: {
  custom: {
    50: '#8970df',
    500: '#4237cf',
    950: '#000000',
  },
}

SCSS

$custom: #4237cf;
$custom-light: #8970df;
$custom-dark: #000000;

JSON

{
  "hex": "#4237cf",
  "rgb": {
    "r": 66,
    "g": 55,
    "b": 207
  },
  "hsl": {
    "h": 244.342,
    "s": 61.29,
    "l": 51.373
  },
  "oklch": {
    "l": 0.45963,
    "c": 0.22177,
    "h": 276.4
  },
  "luminance": 0.08396
}

Semantic roles & 50–950 ramp

primary

#4237CF

secondary

#CED28F

accent

#E443D9

background

#F9F6FD

surface

#F2ECFB

border

#CCC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #4237CF

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

Preview Lab → · Contrast checker → · Palette generator →