#4237C4#4237C4

#4237C4 is a dark, highly saturated blue. Relative luminance 0.079; OKLCH L 44.9% C 0.209 H 277.3°. Best body text is #FFFFFF at 8.15:1 contrast (WCAG AA passes).

Color values

HEX	#4237C4
RGB	rgb(66, 55, 196)
HSL	hsl(245, 56%, 49%)
HSV	hsv(245, 72%, 77%)
CMYK	cmyk(66.3%, 71.9%, 0%, 23.1%)
CIE-LAB	lab(33.72, 47.03, -71.62)
CIE-LCH	lch(33.72, 85.68, 303.29°)
OKLab	oklab(44.88% 0.0267 -0.2068)
OKLCH	oklch(44.88% 0.209 277.3)
XYZ	xyz(13.5735, 7.8750, 53.0186)
Luminance	0.0788 (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

#4237C4 #B9C437

analogous

#3773C4 #4237C4 #8937C4

triadic

#4237C4 #C44237 #37C442

tetradic

#4237C4 #C43773 #B9C437 #37C489

square

#4237C4 #C43773 #B9C437 #37C489

split-complementary

#4237C4 #C48937 #73C437

monochromatic

#221C64 #322A94 #4237C4 #6D65D4 #9A94E1

Accessibility & contrast

On white

8.15

#4237C4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#4237C4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4237C4

8.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4237C4	#FFFFFF	#000000	##FFFFFF
##4237C4	1.00	8.15	2.58	8.15
#FFFFFF	8.15	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055C8

Deuteranopia (green-blind)

#0049C1

Tritanopia (blue-blind)

#005E7A

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #4237c4;
/* rgb */ color: rgb(66, 55, 196);
/* oklch */ color: oklch(44.9% 0.209 277.3);

Tailwind

colors: {
  custom: {
    50: '#8770d7',
    500: '#4237c4',
    950: '#000000',
  },
}

SCSS

$custom: #4237c4;
$custom-light: #8770d7;
$custom-dark: #000000;

JSON

{
  "hex": "#4237c4",
  "rgb": {
    "r": 66,
    "g": 55,
    "b": 196
  },
  "hsl": {
    "h": 244.681,
    "s": 56.175,
    "l": 49.216
  },
  "oklch": {
    "l": 0.44882,
    "c": 0.20855,
    "h": 277.3
  },
  "luminance": 0.07876
}

Semantic roles & 50–950 ramp

primary

#4237C4

secondary

#C7CC8B

accent

#DF48D4

background

#F9F6FD

surface

#F1ECFA

border

#CBC7D3

text

#0D0715

muted

#7E7A83

Preview Lab

Preview with #4237C4

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

Preview Lab → · Contrast checker → · Palette generator →