#4237D0#4237D0

#4237D0 is a mid, highly saturated blue. Relative luminance 0.084; OKLCH L 46.1% C 0.223 H 276.3°. Best body text is #FFFFFF at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#4237D0
RGB	rgb(66, 55, 208)
HSL	hsl(244, 62%, 52%)
HSV	hsv(244, 74%, 82%)
CMYK	cmyk(68.3%, 73.6%, 0%, 18.4%)
CIE-LAB	lab(34.89, 50.82, -76.68)
CIE-LCH	lch(34.89, 91.99, 303.53°)
OKLab	oklab(46.06% 0.0244 -0.2216)
OKLCH	oklch(46.06% 0.223 276.3)
XYZ	xyz(14.9944, 8.4433, 60.5018)
Luminance	0.0844 (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

#4237D0 #C5D037

analogous

#3779D0 #4237D0 #8F37D0

triadic

#4237D0 #D04237 #37D042

tetradic

#4237D0 #D03779 #C5D037 #37D08F

square

#4237D0 #D03779 #C5D037 #37D08F

split-complementary

#4237D0 #D08F37 #79D037

monochromatic

#211B72 #2F26A3 #4237D0 #7169DC #A09AE7

Accessibility & contrast

On white

7.81

#4237D0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#4237D0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4237D0

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4237D0	#FFFFFF	#000000	##FFFFFF
##4237D0	1.00	7.81	2.69	7.81
#FFFFFF	7.81	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059D4

Deuteranopia (green-blind)

#004BCD

Tritanopia (blue-blind)

#006381

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #4237d0;
/* rgb */ color: rgb(66, 55, 208);
/* oklch */ color: oklch(46.1% 0.223 276.3);

Tailwind

colors: {
  custom: {
    50: '#8a70e0',
    500: '#4237d0',
    950: '#000000',
  },
}

SCSS

$custom: #4237d0;
$custom-light: #8a70e0;
$custom-dark: #000000;

JSON

{
  "hex": "#4237d0",
  "rgb": {
    "r": 66,
    "g": 55,
    "b": 208
  },
  "hsl": {
    "h": 244.314,
    "s": 61.943,
    "l": 51.569
  },
  "oklch": {
    "l": 0.46063,
    "c": 0.22296,
    "h": 276.3
  },
  "luminance": 0.08445
}

Semantic roles & 50–950 ramp

primary

#4237D0

secondary

#CED390

accent

#E543D9

background

#F9F6FD

surface

#F2ECFB

border

#CCC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #4237D0

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

Preview Lab → · Contrast checker → · Palette generator →