#4237C0#4237C0

#4237C0 is a dark, highly saturated blue. Relative luminance 0.077; OKLCH L 44.5% C 0.204 H 277.7°. Best body text is #FFFFFF at 8.27:1 contrast (WCAG AA passes).

Color values

HEX	#4237C0
RGB	rgb(66, 55, 192)
HSL	hsl(245, 55%, 48%)
HSV	hsv(245, 71%, 75%)
CMYK	cmyk(65.6%, 71.4%, 0%, 24.7%)
CIE-LAB	lab(33.34, 45.76, -69.90)
CIE-LCH	lch(33.34, 83.55, 303.21°)
OKLab	oklab(44.5% 0.0274 -0.2018)
OKLCH	oklch(44.5% 0.204 277.7)
XYZ	xyz(13.1243, 7.6953, 50.6527)
Luminance	0.0770 (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

#4237C0 #B5C037

analogous

#3770C0 #4237C0 #8737C0

triadic

#4237C0 #C04237 #37C042

tetradic

#4237C0 #C03770 #B5C037 #37C087

square

#4237C0 #C03770 #B5C037 #37C087

split-complementary

#4237C0 #C08737 #70C037

monochromatic

#211C61 #322990 #4237C0 #6B62D2 #9892E0

Accessibility & contrast

On white

8.27

#4237C0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#4237C0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4237C0

8.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4237C0	#FFFFFF	#000000	##FFFFFF
##4237C0	1.00	8.27	2.54	8.27
#FFFFFF	8.27	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054C4

Deuteranopia (green-blind)

#0049BD

Tritanopia (blue-blind)

#005D78

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #4237c0;
/* rgb */ color: rgb(66, 55, 192);
/* oklch */ color: oklch(44.5% 0.204 277.7);

Tailwind

colors: {
  custom: {
    50: '#8670d4',
    500: '#4237c0',
    950: '#000000',
  },
}

SCSS

$custom: #4237c0;
$custom-light: #8670d4;
$custom-dark: #000000;

JSON

{
  "hex": "#4237c0",
  "rgb": {
    "r": 66,
    "g": 55,
    "b": 192
  },
  "hsl": {
    "h": 244.818,
    "s": 55.466,
    "l": 48.431
  },
  "oklch": {
    "l": 0.44495,
    "c": 0.20367,
    "h": 277.7
  },
  "luminance": 0.07696
}

Semantic roles & 50–950 ramp

primary

#4237C0

secondary

#C5CB88

accent

#DF49D3

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0D0714

muted

#7D7A83

Preview Lab

Preview with #4237C0

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

Preview Lab → · Contrast checker → · Palette generator →