#4237AA#4237AA

#4237AA is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.4% C 0.176 H 280.1°. Best body text is #FFFFFF at 8.90:1 contrast (WCAG AA passes).

Color values

HEX	#4237AA
RGB	rgb(66, 55, 170)
HSL	hsl(246, 51%, 44%)
HSV	hsv(246, 68%, 67%)
CMYK	cmyk(61.2%, 67.6%, 0%, 33.3%)
CIE-LAB	lab(31.33, 38.67, -60.14)
CIE-LCH	lch(31.33, 71.50, 302.74°)
OKLab	oklab(42.44% 0.0309 -0.1733)
OKLCH	oklch(42.44% 0.176 280.1)
XYZ	xyz(10.8664, 6.7921, 38.7608)
Luminance	0.0679 (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

#4237AA #9FAA37

analogous

#3766AA #4237AA #7C37AA

triadic

#4237AA #AA4237 #37AA42

tetradic

#4237AA #AA3766 #9FAA37 #37AA7C

square

#4237AA #AA3766 #9FAA37 #37AA7C

split-complementary

#4237AA #AA7C37 #66AA37

monochromatic

#1E194E #30287C #4237AA #6156C8 #8C84D7

Accessibility & contrast

On white

8.90

#4237AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#4237AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4237AA

8.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4237AA	#FFFFFF	#000000	##FFFFFF
##4237AA	1.00	8.90	2.36	8.90
#FFFFFF	8.90	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAE

Deuteranopia (green-blind)

#0045A8

Tritanopia (blue-blind)

#00556C

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #4237aa;
/* rgb */ color: rgb(66, 55, 170);
/* oklch */ color: oklch(42.4% 0.176 280.1);

Tailwind

colors: {
  custom: {
    50: '#826fc4',
    500: '#4237aa',
    950: '#000000',
  },
}

SCSS

$custom: #4237aa;
$custom-light: #826fc4;
$custom-dark: #000000;

JSON

{
  "hex": "#4237aa",
  "rgb": {
    "r": 66,
    "g": 55,
    "b": 170
  },
  "hsl": {
    "h": 245.739,
    "s": 51.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.42437,
    "c": 0.17599,
    "h": 280.1
  },
  "luminance": 0.06793
}

Semantic roles & 50–950 ramp

primary

#4237AA

secondary

#BAC17C

accent

#DB4DCD

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #4237AA

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

Preview Lab → · Contrast checker → · Palette generator →