#4237C5#4237C5

#4237C5 is a dark, highly saturated blue. Relative luminance 0.079; OKLCH L 45.0% C 0.210 H 277.3°. Best body text is #FFFFFF at 8.13:1 contrast (WCAG AA passes).

Color values

HEX	#4237C5
RGB	rgb(66, 55, 197)
HSL	hsl(245, 56%, 49%)
HSV	hsv(245, 72%, 77%)
CMYK	cmyk(66.5%, 72.1%, 0%, 22.7%)
CIE-LAB	lab(33.82, 47.35, -72.05)
CIE-LCH	lch(33.82, 86.21, 303.31°)
OKLab	oklab(44.98% 0.0265 -0.2081)
OKLCH	oklch(44.98% 0.21 277.3)
XYZ	xyz(13.6877, 7.9207, 53.6200)
Luminance	0.0792 (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

#4237C5 #BAC537

analogous

#3773C5 #4237C5 #8937C5

triadic

#4237C5 #C54237 #37C542

tetradic

#4237C5 #C53773 #BAC537 #37C589

square

#4237C5 #C53773 #BAC537 #37C589

split-complementary

#4237C5 #C58937 #73C537

monochromatic

#221C65 #322A95 #4237C5 #6E65D4 #9B95E1

Accessibility & contrast

On white

8.13

#4237C5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#4237C5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4237C5

8.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4237C5	#FFFFFF	#000000	##FFFFFF
##4237C5	1.00	8.13	2.58	8.13
#FFFFFF	8.13	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055C9

Deuteranopia (green-blind)

#0049C2

Tritanopia (blue-blind)

#005F7B

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #4237c5;
/* rgb */ color: rgb(66, 55, 197);
/* oklch */ color: oklch(45.0% 0.210 277.3);

Tailwind

colors: {
  custom: {
    50: '#8770d8',
    500: '#4237c5',
    950: '#000000',
  },
}

SCSS

$custom: #4237c5;
$custom-light: #8770d8;
$custom-dark: #000000;

JSON

{
  "hex": "#4237c5",
  "rgb": {
    "r": 66,
    "g": 55,
    "b": 197
  },
  "hsl": {
    "h": 244.648,
    "s": 56.349,
    "l": 49.412
  },
  "oklch": {
    "l": 0.44979,
    "c": 0.20977,
    "h": 277.3
  },
  "luminance": 0.07922
}

Semantic roles & 50–950 ramp

primary

#4237C5

secondary

#C8CD8B

accent

#E048D4

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0715

muted

#7E7A83

Preview Lab

Preview with #4237C5

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

Preview Lab → · Contrast checker → · Palette generator →