#4237C7#4237C7

#4237C7 is a mid, highly saturated blue. Relative luminance 0.080; OKLCH L 45.2% C 0.212 H 277.1°. Best body text is #FFFFFF at 8.07:1 contrast (WCAG AA passes).

Color values

HEX	#4237C7
RGB	rgb(66, 55, 199)
HSL	hsl(245, 57%, 50%)
HSV	hsv(245, 72%, 78%)
CMYK	cmyk(66.8%, 72.4%, 0%, 22%)
CIE-LAB	lab(34.01, 47.99, -72.90)
CIE-LCH	lch(34.01, 87.27, 303.35°)
OKLab	oklab(45.17% 0.0261 -0.2106)
OKLCH	oklch(45.17% 0.212 277.1)
XYZ	xyz(13.9184, 8.0129, 54.8349)
Luminance	0.0801 (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

#4237C7 #BCC737

analogous

#3774C7 #4237C7 #8A37C7

triadic

#4237C7 #C74237 #37C742

tetradic

#4237C7 #C73774 #BCC737 #37C78A

square

#4237C7 #C73774 #BCC737 #37C78A

split-complementary

#4237C7 #C78A37 #74C737

monochromatic

#221C67 #322A97 #4237C7 #6F66D5 #9C96E2

Accessibility & contrast

On white

8.07

#4237C7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#4237C7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4237C7

8.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4237C7	#FFFFFF	#000000	##FFFFFF
##4237C7	1.00	8.07	2.60	8.07
#FFFFFF	8.07	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056CB

Deuteranopia (green-blind)

#004AC4

Tritanopia (blue-blind)

#005F7C

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #4237c7;
/* rgb */ color: rgb(66, 55, 199);
/* oklch */ color: oklch(45.2% 0.212 277.1);

Tailwind

colors: {
  custom: {
    50: '#8870d9',
    500: '#4237c7',
    950: '#000000',
  },
}

SCSS

$custom: #4237c7;
$custom-light: #8870d9;
$custom-dark: #000000;

JSON

{
  "hex": "#4237c7",
  "rgb": {
    "r": 66,
    "g": 55,
    "b": 199
  },
  "hsl": {
    "h": 244.583,
    "s": 56.693,
    "l": 49.804
  },
  "oklch": {
    "l": 0.45174,
    "c": 0.21219,
    "h": 277.1
  },
  "luminance": 0.08014
}

Semantic roles & 50–950 ramp

primary

#4237C7

secondary

#C9CD8C

accent

#E048D4

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0715

muted

#7E7A83

Preview Lab

Preview with #4237C7

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

Preview Lab → · Contrast checker → · Palette generator →