#4237C8#4237C8

#4237C8 is a mid, highly saturated blue. Relative luminance 0.081; OKLCH L 45.3% C 0.213 H 277.0°. Best body text is #FFFFFF at 8.04:1 contrast (WCAG AA passes).

Color values

HEX	#4237C8
RGB	rgb(66, 55, 200)
HSL	hsl(245, 57%, 50%)
HSV	hsv(245, 73%, 78%)
CMYK	cmyk(67%, 72.5%, 0%, 21.6%)
CIE-LAB	lab(34.11, 48.30, -73.32)
CIE-LCH	lch(34.11, 87.80, 303.38°)
OKLab	oklab(45.27% 0.0259 -0.2118)
OKLCH	oklch(45.27% 0.213 277)
XYZ	xyz(14.0349, 8.0595, 55.4484)
Luminance	0.0806 (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

#4237C8 #BDC837

analogous

#3774C8 #4237C8 #8B37C8

triadic

#4237C8 #C84237 #37C842

tetradic

#4237C8 #C83774 #BDC837 #37C88B

square

#4237C8 #C83774 #BDC837 #37C88B

split-complementary

#4237C8 #C88B37 #74C837

monochromatic

#221D68 #322A98 #4237C8 #6F67D5 #9D97E2

Accessibility & contrast

On white

8.04

#4237C8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#4237C8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4237C8

8.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4237C8	#FFFFFF	#000000	##FFFFFF
##4237C8	1.00	8.04	2.61	8.04
#FFFFFF	8.04	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056CC

Deuteranopia (green-blind)

#004AC5

Tritanopia (blue-blind)

#00607C

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #4237c8;
/* rgb */ color: rgb(66, 55, 200);
/* oklch */ color: oklch(45.3% 0.213 277.0);

Tailwind

colors: {
  custom: {
    50: '#8870da',
    500: '#4237c8',
    950: '#000000',
  },
}

SCSS

$custom: #4237c8;
$custom-light: #8870da;
$custom-dark: #000000;

JSON

{
  "hex": "#4237c8",
  "rgb": {
    "r": 66,
    "g": 55,
    "b": 200
  },
  "hsl": {
    "h": 244.552,
    "s": 56.863,
    "l": 50
  },
  "oklch": {
    "l": 0.45272,
    "c": 0.2134,
    "h": 277
  },
  "luminance": 0.08061
}

Semantic roles & 50–950 ramp

primary

#4237C8

secondary

#C9CE8D

accent

#E048D5

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #4237C8

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

Preview Lab → · Contrast checker → · Palette generator →