#4237AD#4237AD

#4237AD is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.7% C 0.180 H 279.8°. Best body text is #FFFFFF at 8.82:1 contrast (WCAG AA passes).

Color values

HEX	#4237AD
RGB	rgb(66, 55, 173)
HSL	hsl(246, 52%, 45%)
HSV	hsv(246, 68%, 68%)
CMYK	cmyk(61.8%, 68.2%, 0%, 32.2%)
CIE-LAB	lab(31.59, 39.64, -61.51)
CIE-LCH	lch(31.59, 73.17, 302.80°)
OKLab	oklab(42.71% 0.0305 -0.1773)
OKLCH	oklch(42.71% 0.18 279.8)
XYZ	xyz(11.1534, 6.9069, 40.2725)
Luminance	0.0691 (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

#4237AD #A2AD37

analogous

#3767AD #4237AD #7D37AD

triadic

#4237AD #AD4237 #37AD42

tetradic

#4237AD #AD3767 #A2AD37 #37AD7D

square

#4237AD #AD3767 #A2AD37 #37AD7D

split-complementary

#4237AD #AD7D37 #67AD37

monochromatic

#1F1950 #30287F #4237AD #6257CA #8E86D8

Accessibility & contrast

On white

8.82

#4237AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#4237AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4237AD

8.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4237AD	#FFFFFF	#000000	##FFFFFF
##4237AD	1.00	8.82	2.38	8.82
#FFFFFF	8.82	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB1

Deuteranopia (green-blind)

#0046AB

Tritanopia (blue-blind)

#00566D

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #4237ad;
/* rgb */ color: rgb(66, 55, 173);
/* oklch */ color: oklch(42.7% 0.180 279.8);

Tailwind

colors: {
  custom: {
    50: '#836fc6',
    500: '#4237ad',
    950: '#000000',
  },
}

SCSS

$custom: #4237ad;
$custom-light: #836fc6;
$custom-dark: #000000;

JSON

{
  "hex": "#4237ad",
  "rgb": {
    "r": 66,
    "g": 55,
    "b": 173
  },
  "hsl": {
    "h": 245.593,
    "s": 51.754,
    "l": 44.706
  },
  "oklch": {
    "l": 0.4271,
    "c": 0.17986,
    "h": 279.8
  },
  "luminance": 0.06908
}

Semantic roles & 50–950 ramp

primary

#4237AD

secondary

#BCC27D

accent

#DB4DCE

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #4237AD

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

Preview Lab → · Contrast checker → · Palette generator →